Was “matchmaking” the equivalent of today's “shipping”?
What's the source of "shipped" in a romantic sense?
What's the difference between the nvidia-current, and nvidia-current-updates packages? What's the difference between the , and  packages?  The former has a higher version number, and the description of the packages are the same.    Which do I use? Which is the most recent one What's the purpose of this split packaging? I'm looking for the method by which the partial derangement formula $D_{n,k}$ was derived. I can determine the values for small values of N empirically, but how the general case formula arose still alludes me.  Any links/books or an explanation will be appreciated.  The formula is:  $D_{n,k} = {n \choose k}!(n-k)$  Links: What's the incentive to flag duplicates? I only say duplicates but I think this could be extended to several other flagging reasons. Since accepted answers/upvotes don't get reverted on questions I see people sometimes cut and paste the answer from a duplicate question without flagging as duplicate. In the end they can usually score a few upvotes and even an accepted answer.  Found this related question:   Seems to have a lot of popularity but nothing ever happened  Jeff on Dupes     Those arguing for “remove reputation from dupes” have no idea of the   Frankenstein monster you’d be creating.      That would be an awesome rep-denial tool for griefing others, first of   all.      Second, it creates a MASSIVE disincentive to participation — even if   you had no idea there were duplicates, you could be bushwhacked at any   time even if you contributed a fantastic answer. Oops sorry dupe!   Zero rep, buddy! Bzzzzt! Go away! Take your awesome answer elsewhere!      Incentives are fine, but penalties are an incredibly bad idea and   would actively hurt users and the network.   I guess this answers my question, even if I disagree with jeff. Can I prevent/restrict standard users from installing/uninstalling software? Can i prevent/restrict standard user from installing/uninstalling software in Ubuntu 12.04 desktop? I'm getting an error - didnt understand relationship when running this query in dev console. I have set the child relationship the lookup field to IncEvents. The lookup field is on the MyRule object -   select Id, Name, (select Id from IncEvents_r) from Namespace_MyRule__c  I noticed that the editor is displaying a single underscore between the namespace and the object name but I did enter a double underscore. Some days I'm working with extremely large Excel files.  They have too many sheets that can't be shown in one sheet tab. (see image)      So, I'm wondering whether or not we can show Excel sheet on more than 1 row. Many tries with Google don't help much.    Many tries but I still can't make Excel show the sheet bar the way I want (≥ 2 rows), so I'm working with some VBA Scripts kopischke suggested.    FYI, right click on |&lt; &lt;&lt; &gt;&gt; &gt;| button on the bottom-right corner show you a list of up to 15 sheets.  For more, click on View more in the list appeared. Is the neutral wire considered safe? Windows 7 USB install error I am trying to install Windows 7 Professional x64 from a bootable USB stick. I have used the Windows 7 USB DVD Download Tool to create the media from an ISO.  The machine boots from USB fine, and enters the Windows installation wizard but then I get an error stating:     A required CD/DVD drive device driver is missing. If you have a driver floppy disk, CD, DVD, or USB flash drive, please insert it now.   I have tried setting the SATA controller in the BIOS to both AHCI and ATA but neither appear make any difference.  I've also tried both the USB 3 and USB 2 ports with no difference.  I've also tried to use the files from an official Dell recovery CD as this is a Dell laptop but again, no dice.  All this because there's no optical drive in the machine!  Dell Vostro V131 / i5-2450M / BIOS A04  Can anyone offer any advice please? I am reading Boyd &amp; Vandenberghe's Convex Optimization. The authors use curved greater than or equal to (\succcurlyeq)  $$f(x^*) \succcurlyeq \alpha$$  and curved less than or equal to (\preccurlyeq)  $$f(x^*) \preccurlyeq \alpha$$  Can someone explain what they mean? Resetting Ubuntu to factory settings How many actuations are "too many actuations"? When looking at used camera bodies, a question that comes up a lot, is "how many shutter actuations, or clicks, does it have?"   What I am wondering is, how many is too many. In other words, is there a reference for knowing when a sensor is more likely to go? How should I judge a camera body with 20000 vs 5000? Is that a significant difference, or is that not even relevant.  Obviously this might something that is dependent on model, so if there is some information based on model that would be even more interesting.  One of the guys at Canon Tech Support said that this is completely irrelevant for the Rebel series cameras, but he is obviously slightly biased. :) $\operatorname{Aut}(\mathbb Z_n)$ is isomorphic to $U_n$. I've tried, but I can't solve the question. Please help me prove that:  $\operatorname{Aut}(\mathbb Z_n)$ is isomorphic to  $U_n$. In the Law of Reflection, the angle of incidence is equal to angle of reflection. Why is this true? This is clearly true experimentally, but how does one prove this true mathematically? What does "had had" mean? How does this differ from "had"? For example, what is the difference between the following two sentences:     I had a bad day      I had had a bad day Applications Don't Show Up in Spotlight Spotlight has stopped showing any results for my Applications. I've tried reindexing and removing the index so it rebuilds it. No change. I've tried adding Applications to the Privacy tab and removing it, no change.  I tried repairing disk permissions and redoing the above, no change. I've tried removing everything from the index except Applications and then I just get nothing for any search at all (except dictionary entries).  I tried adding a symlink in my homedir to Applications and reindexing, but no change.  Any ideas on what to do?  I'm running Snow Leopard.  This is driving me crazy!  Update: I've noticed that when I start a reindex with sudo mdutil -E / and then immediately do a Spotlight search for an app that the app shows up temporarily until Spotlight gets disabled due to active indexing.  After the indexing is done, the app entries go away. How do you make div elements display inline? Any way to tell apart a CPU defect from a mainboard defect? I have a fairly modern desktop computer, an AMD Athlon II X2 based silent PC, that does not work.  When turned on, it will start physically (all fans are rotating, disks start up...) but not give a signal on any of the graphics ports (DVI, VGA, and HDMI, I tried all three). Also, the reset button does not seem to have any effect.  I have stripped the mainboard bare of all SATA connections, extension cards, and the one 2GB RAM chip to eliminate them as the problem source, but to no avail, so I think it's fair to assume it's either the mainboard or the processor that are at fault.  However, I have neither a replacement mainboard, nor a replacement processor handy to identify which one is broken. The cause of the defect is unknown, so for all I know, it could be both. Therefore, I'm reluctant to buy replacement hardware blindly before knowing more.   Is there any way to further diagnose (or at least get some indication) which component is broken without buying replacement hardware? difference fn(String... args) vs fn(String[] args) Whats this syntax useful for :       function(String... args)   Is this same as writing       function(String[] args)    with difference only while invoking this method or is there any other feature involved with it ? Virtual Box Toolbar Hidden. How to show? Knife tool doesn't cut obscured edges I'm using Blender 2.66,  I find that the knife tool (K) doesn't work the way it used to.     Dragging across an obscured edge, even if selected, doesn't cut it. There seems to be no way to activate the option to do a midpoint cut or multiple cuts.