Making a mistake is an opportunity to grow by testing and validating your mental model of a system. If the price of a mistake is too high that is the same as sa

Making a mistake is an opportunity to grow by testing and validating your mental model of a system. If the price of a mistake is too high that is the same as saying the price of testing is too high. If you want to craft a world in which people can learn more from fewer mistakes then I think that is a laudable goal but here it sounds like you simply want to keep that high cost. Side note; Factorio is a game where the price of making a mistake in your build is having to pick a thing up and try again. Very low friction for most mistakes. People learn a lot in that game by making mistakes, myself included (two direction trains leads you down a path of evil by the way), and I think if you were to include friction into that system to prevent them from wanting to make mistakes at all the overall learning would go down. Or for an entirely different example, are you also opposed to FPGAs? Should people be forced to not simulate circuits before sending them off to be fabricated, in the hopes that by making the mistake more painful they won't make as many? Besides its not like people need more examples in their lives of situations where a mistake is not easily recoverable from. So to answer your question; I certainly can't, I am a mistake based learner. If you can do better then please, please, do.