system
Given the following post, respond as if you're commenting on Reddit:
human
I have come into possession of a device that can speed up my brain (but not my body). Could I be reasonably sure of winning any given fight?

I have a device that can speed up my brain by any amount I wish.  It doesn't make me any smarter, it just makes the world around me seem to go slower.  It also has no effect on the rest of my body; it can still only move as fast as my muscles allow normally, so it feels quite slow when I have the device turned up to a high setting.  (It's rather disconcerting to take subjective minutes or hours to draw a breath, but one gets used to it.)

Now before I set out to find interesting and profitable uses for this device, I think it would be a good idea to consider if it could aid in my self-defense.  I am a healthy (if slightly overweight) 30-year-old man of average strength, I have never been in a fight, and I have no particular training in fighting.  With the device, my reflexes are effectively instantaneous, and I'll have as long as I wish to observe, evaluate, and consider any given situation.  But again, I can't move much faster than normal, or punch any harder than I could before.

Could I be reasonably sure of winning any given fight?  What about against someone considerably larger and stronger than me?  What about with an expert martial artist?  What about multiple opponents?  (I still can't see behind me or turn my head any faster!)  What if my opponent is armed- could I perhaps dodge bullets with my perfect reflexes and unlimited time to consider how to move my body?
gpt
This really depends on who you are fighting.  With some training on how to fight dirty, there are some dirty techniques you could use.  For example, you'd be able to aim and correct for the eyes with your fingers to a greater degree of accuracy than most others.

The best kind of martial art for you to learn would be an akido or judo type, which uses the momentum of the opponent against them.  Once they throw a punch, you could easily observe and turn the force against them, provided you know what to do.

Against someone much larger and stronger, you'd be in trouble unless you had training.  The moment they got you on the ground in a grapple, your reaction time would be useless.

Against multiple opponents most people are screwed.  Against an armed opponent, particularly one who is trained to aim, you would not be able to move your body faster than he can draw, point, and fire.  You would be like a man captaining a boat, fully able to observe the enemy ship point its guns at you and fire, and utterly powerless to change your course to stop the fire.