Friday, December 18, 2015

2015/12/08: Percentages, Rate Calculation

I decided to take a break from Jiu-Jitsu today. I'm tired of always being disappointed in myself, so I thought today could be a good break to just play piano...[and not get punched in the face XD]. So of course, I did a lot of thinking. Like I always do.

I've decided I'm going to actually break down every motion, or at least the ones that are currently relevant to me, identify the lever systems in place, and figure out how I need to position my limbs and such so that I exert the maximum force possible. That will be my mission over the break that I get from Jiu-Jitsu, and I will post significant findings here.

Anyway, I've been thinking. And I realized something - the reason I'm so disappointed in myself is that I can't get my moves to work a majority of the time. But there's one -well...a few- problems with that.

1. I have not drilled the moves to muscle memory so they are not 100% in terms of execution
2. I am fighting against an opponent who is somewhat equal in skill
3. There are inherent percentages of the moves themselves based on the inherent advantages/disadvantages of the positions
4. Timing advantage, speed advantage, inherent physical traits [strength] advantage

So suppose I am doing an elbow escape that I have only 65% mastered. Elbow escapes are about 80% success, say. with the proper setup, and we will assume that I have the proper setup. Here, a success will be defined as no longer in the mount. [They might jump to knee on belly, but that forces movement] I will assume my opponent is equal in skill with me, but I only have 75% of his strength. I have a speed advantage of 110%, and a timing advantage of 110%. So let's do some calculations.

Expected Percentage = Execution% * (Your skill/( Their Skill + Your Skill)) * Inherent Advantage/Disadvantage * Inherent strengths

So for this elbow escape, Expected Percentage = 0.65*0.50*0.80*0.75*1.10*1.10 = 0.23595.

Holy shit. That number is way lower than I expected. So I should expect my elbow escapes to work about a fourth of the time [for now]. Any higher means I'm improving! Moral of the story? Stop being so disappointed in yourself. Right now, a 25% success rate means average, and later on, that number will go up, whether because your relative skill is increasing depending on your opponent, or otherwise.

Calm down.

Also, I'm waiting for my first stripe (mainly because I want access to the stripe 2 material on Gracie University), but I haven't gotten it yet for some reason, despite numerous other people who tested for their blue belt after me getting it. So I sense something is wrong. Was it due to my lackluster attendance in the first months of the year? The fact that I twistered a bunch of people? Or do rubber guard stuff/other super sporty/unorthodox stuff sometimes? I have no idea. I think I'm keeping it playful and I'm definitely putting survival first, but the scary part is that one's blindspots...are blind to oneself. So I'll just keep going and I hope I get my stripe soon haha. I want to learn those moves grrrrrrr

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