> Twitter is just like that, and there are actually lots of small engines making sure the characters get from your keyboard to other people's eyes."

That's an abstract explanation of what Twitter's code is, it doesn't get you anywhere closer to being able to actually understand the code.

Just like I wouldn't expect a layperson person to be able to find and fix a bug in a codebase, I don't think they can reliably evaluate the nuances of the financial system.