Doesn't this all depend on how often you would be using that knowledge? Average computer literacy is horrendous and we use them every day. These devices are use

Doesn't this all depend on how often you would be using that knowledge? Average computer literacy is horrendous and we use them every day. These devices are used for everything and becoming more and more integral to society. Surgical techniques and how to handle exotic financial instruments are specialist topics that are useful in extremely niche situations. In those situations you will speak to someone who is knowledgeable on them.