While I was listening to a guided meditation by Jon Kabat-Zinn (who is a Native English-Speaker) I bumped into an expression that appears to contain a sort of inversion in an affirmative sentence.  I've looked it up in the  and it seems this is something not linked to the presence of be likely to.     Only if you know, or even suspect that it actually does, are you likely to have enough energy for the discipline of formal practice.
I have seen this construction quite often:      Online ads have been around since the dawn of the Web, but only in   recent years have they become the rapturous life dream of Silicon   Valley.   What is the rule there?. When your sentence doesn't start with pronoun + verb, invert them as verb + pronoun?. I know it sounds awkward but is it possible (grammatically correct) to use something similar to:      Online ads have been around since the dawn of the Web, but only in   recent years they have become...   And in any case, does this only work with have (or has)? Maybe it works fine with 'had' but I can't think of an example right now.
Can we simulate the whole universe in computer? Here is an idea: As human kind we discovered many laws, formulas, events, etc. in our surrounding environment.here is a way to discover the unknowns :   Now if we simulate a virtual world with our knowledge in computers we expect it to work, because we guess that we know all of it. If a bug occurs in the simulation or something acts differently from the expected in the real world, that may tell us that there is something new; a thing (law, formula, ...) that we didn't know, which causes that bug or that anomaly.  For examples imagine that we created a virtual simulation for motion dynamics and we didn't add the friction to our simulation. Everything in the simulation will work fine but in a different manner. So if we hadn't discovered friction yet, would it help us to think about if there is something we didn't add? Or if there is something we don't know?       But can we simulate the whole universe, everything we know, in one simulation? I know it will require a deadly high computational power. Something like what they did for DNA; two years of computation to analyse their pattern. can we simulate everything we know to create a virtual universe to compare it to our real universe? After the death of Lord Voldemort, Harry was taken to the Dursleys and became known as "The Boy Who Lived".  We know that the Wizarding World found out  that Voldemort was dead and undoubtedly it was Dumbledore that advised people that Harry had somehow survived the attack and caused Voldemort's death. According to Snape (in HP:HBP) there were even persistent rumours that Harry was a powerful Dark Wizard in the making until he turned up at Hogwarts a decade later.  My question is : Where did the Wizarding World think Harry was for the intervening 10 years? Implications and Ordinary language Book: World covered in trees that are miles high How to take FileZilla credentials from the software's interface? Hi I use FileZilla to transfer files to the server via FTP.  I connected to FileZilla from my computer months ago. I entered the server address, port &amp; administration password on to the startup window of the software &amp; checked the "Always connect to this server" option ON. So, every time I start FileZilla, It connects to my server automatically &amp; I never had to remember my credentials.  I know it's in the software itself..somewhere...like in a cache memory or something. I need to get those details. How can I take those credentials from the FileZilla client installed in my desktop pc.? Is it even possible? Relativity and Galaxy Rotation Speed "When I grow up, I am going to be a doctor"- Is it correct? When I grow up, I am going to be a doctor.   Is this sentence correct? Personally I think my growing up will happen in future and "I am going to be a doctor" sounds like it is going to happen in next month! But the sentence clearly indicates the speaker is a child. So according to me, "I am going to be a doctor" should be replaced by "I will be a doctor". So I think a more clear sentence would be     When I will grow up, I will be a doctor.   Is my concept correct here? Evaluate $\int_0^\infty\frac{\ln x}{1+x^2}dx$ Evaluate $$\int_0^\infty\frac{\ln x}{1+x^2}\ dx$$ I don't know where to start with this so either the full evaluation or any hints or pushes in the right direction would be appreciated.  Thanks. When there are several cottages each with several tariffs (depending on the season), should the plural be "cottage tariffs" or "cottages tariffs"?  For context, this is to be a section title on a website renting out the cottages.  An explanation of the grammatical rules would be helpful. Cron Job not working in plugin I have written a plugin that will convert posts to excel format and then email the .xls to an email id. I can make it work with when function is declared in functions.php but does not work with function defined in plugin file.   if ( ! wp_next_scheduled( 'xls_func_hook1' ) ) {   wp_schedule_event( time(), 'hourly', 'xls_func_hook1' ); }  add_action( 'xls_func_hook1', 'sendxls1' ); //senxls1 is a function in functions.php if ( ! wp_next_scheduled( 'xls_func_hook2' ) ) {    wp_schedule_event( time(), 'hourly', 'xls_func_hook2' ); } add_action( 'xls_func_hook2', 'export2excel' );   The full code is at In Back to the Future, how did Marty get the timing right with the lightning strike? So, in the first movie, presumably the Doc and Marty know exactly when the lightning will strike the clock tower. This is because Marty has the flyer with the picture of the stopped clock on it. In order to power the DeLorean, the Doc cooks up this contraption to conduct the lightning through a hook into the DeLorean. All Marty has to do is be driving at 88 mph and hit the wire at the exact right moment.  Here's the question though - if you recall, the Doc sets a timer and tells Marty to drive back to a pre-designated starting point. When the timer goes off, Marty is supposed to accelerate to 88 mph. My assumption is that the Doc has calculated the maximum acceleration of the DeLorean, and using this value has determined the exact starting point that the car needs to be at in order to hit the lightning at the right time.  Unfortunately, the car stalls. It takes Marty a while, but he's finally able to start it up. Being that he started late though...shouldn't he have missed the lighting? What does f-stop mean? What does f-stop mean? Is it the same thing when people say "2 stops" for example? Can you check if a PSN code is valid without redeeming it? I have a code for additional content on a Playstation game, and I want to know whether it is still valid, but I don't want to redeem it for myself.  If I enter it in the Playstation Store (on PS3, PS4 or the website), does it get redeemed to my account automatically, or can I enter it without redeeming? If it gets redeemed automatically, is there another way to check if it is valid? ASP.NET -> WCF concurrency problem Why (and how) did using cat on binary files mess up the terminal? Setting the pivot point of an object I have a sword that currently rotates around a pivot point thats off of the actual object. Im new to blender and im not sure how i would go about changing it so that the sword rotates around the handle. Any help would be appreciated! Why I have this error when I try to install this old blog on my local webserver? I am pretty new to WP (I came from Joomla) and I am finding some difficulties trying to put on my local web server an old backup of a website (made using WP 3.5)  I have performed the following operation:  1) I have put the website backup into a directory named blog into my Apache www directory on my Ubuntu local system.  2) Then I have put the database backup on my MySql local server  3) Finally I have change the values in the wp-config.php file to use my local DB  The problem is that when I try to open the URL to see the website I see noting (a white screen)  Into the Apache log file (/var/log/apache2/error.log) I found the following errors messages:  [Fri Jan 10 22:04:50 2014] [notice] Apache/2.2.22 (Ubuntu) PHP/5.3.10-1ubuntu3.9 with Suhosin-Patch configured -- resuming normal operations [Fri Jan 10 22:05:08 2014] [error] [client 127.0.0.1] PHP Warning:  require_once(/var/www/blog/wp-load.php): failed to open stream: No such file or directory in /var/www/blog/wp-blog-header.php on line 12 [Fri Jan 10 22:05:08 2014] [error] [client 127.0.0.1] PHP Fatal error:  require_once(): Failed opening required '/var/www/blog/wp-load.php' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/blog/wp-blog-header.php on line 12 [Fri Jan 10 22:38:37 2014] [error] [client 127.0.0.1] PHP Warning:  require_once(/var/www/blog/wp-load.php): failed to open stream: No such file or directory in /var/www/blog/wp-blog-header.php on line 12 [Fri Jan 10 22:38:37 2014] [error] [client 127.0.0.1] PHP Fatal error:  require_once(): Failed opening required '/var/www/blog/wp-load.php' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/blog/wp-blog-header.php on line 12 [Fri Jan 10 22:38:38 2014] [error] [client 127.0.0.1] PHP Warning:  require_once(/var/www/blog/wp-load.php): failed to open stream: No such file or directory in /var/www/blog/wp-blog-header.php on line 12 [Fri Jan 10 22:38:38 2014] [error] [client 127.0.0.1] PHP Fatal error:  require_once(): Failed opening required '/var/www/blog/wp-load.php' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/blog/wp-blog-header.php on line 12 [Fri Jan 10 22:38:39 2014] [error] [client 127.0.0.1] PHP Warning:  require_once(/var/www/blog/wp-load.php): failed to open stream: No such file or directory in /var/www/blog/wp-blog-header.php on line 12 [Fri Jan 10 22:38:39 2014] [error] [client 127.0.0.1] PHP Fatal error:  require_once(): Failed opening required '/var/www/blog/wp-load.php' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/blog/wp-blog-header.php on line 12 [Fri Jan 10 22:38:40 2014] [error] [client 127.0.0.1] PHP Warning:  require_once(/var/www/blog/wp-load.php): failed to open stream: No such file or directory in /var/www/blog/wp-blog-header.php on line 12 [Fri Jan 10 22:38:40 2014] [error] [client 127.0.0.1] PHP Fatal error:  require_once(): Failed opening required '/var/www/blog/wp-load.php' (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/blog/wp-blog-header.php on line 12   Why? what could be the problem? How can I try to solve it?  Tnx  Andrea What should I do to avoid ear pain when flying? I always feel a pain in my ears when flying. Specially when descending. The last time I had extreme pain, feeling it inclusive around my eye balls. It felt like someone was touching the eye and pulling it from the inside. I really had to focus, close my eyes and hold to avoid screaming. I am not sure but I think both things might be related. Such a severe situation only happened once.  I just heard that with a cold the ear pain gets worse. I am bit worried that I might go through that situation again. I have a cold and I am going to fly soon.  What can I do to improve this?  I see that some consider this a duplicate of the question "best way to make my ears pop" but after reading the answers I think my question goes a bit beyond that since my pain is more extreme and I think it goes beyond just popping the ears. I also want to know if other methods, like using earplugs, might be effective. Find all functions $f(x)$ such that $f\left(x^2+f(y)\right)$=$y+(f(x))^2$ Let $\mathbb R$ denote the set of all real numbers. Find all function $f: R\to \ R$ such that   $$f\left(x^2+f(y)\right)=y+(f(x))^2$$   It is the problem. I tried to it by putting many at the place of $x$ and $y$ but I can't proceed. Please somebody help me. Is it possible for test error to be lower than training error Is it possible to have test error lower than training error?  I have a classification problem with 2000 samples, 500 of which are positives, 1500 are negatives. I split my data into 70% training data, 30% test data.  Run random forest with 200 estimators and cv=10. I did this several times and compared the recall and precision score and notice the scores for my test set is significantly better. Is this possible?