There are many many more submissive/masochistic men in the world than there are dominant/sadistic women
My guess is that this is true, but I'd be curious what the evidence is other than anecdote. Also, I wonder in the long-term how this will change. In popular media depictions, dominant females and submissive males are a common theme, so if people's sexuality is influenced by what they see/imprint at a young age (which is a standard hypothesis to explain fetishes), one would expect this to possibly change over time.
If you are smart and underemployed, you can very quickly check to see if you are a natural computer programmer by pulling up a page of Python source code and seeing whether it looks like it makes natural sense, and if this is the case you can teach yourself to program very quickly and get a much higher-paying job even without formal credentials.
I don't agree with this one. Python is one of the easiest languages to read certainly, but there's still enough conventions used in programming languages that someone could be a very good programmer with small amounts of training and have this not happen. This sounds possibly like an illusion of transparency or typical mind fallacy.
Agreed about reading random source code files. I popped open the first .py file I found on the django project and got this:
which I would say is a little esoteric for even the most precocious non-programmers.
But I also agree that investigating one's programming aptitude is a great low-investment high-reward endeavor. It does seem to be the case that many people just "get it". This thread offers some great suggestions on how to check: Checking for the Programming Gear.
P/S/A: There are single sentences which can create life-changing amounts of difference.