This has been the road block which has halted my foray into…

This has been the road block which has halted my foray into spaced repetition methods of learning. The activation cost of creating cards is high, and there is no way of knowing up front which knowledge will be useful for me to commit to memory. The problem is two fold: 1) the friction of creating a spaced repetition system and 2) the lack of knowledge about which fields deserve that level of effort.