I guess it's just a revolutionary idea for those that didn't grow up in a time when we already did this. This is pretty much what all my recipes (inherited from my grandmother) look like today, just without the bracketing.
Its not as universal as you are suggesting here. I've seen it before but there are certainly no cards like this in the boxes I've inherited.
anything science based to improve, health, mental, technics, skills
I guess it's just a revolutionary idea for those that didn't grow up in a time when we already did this. This is pretty much what all my recipes (inherited from my grandmother) look like today, just without the bracketing.
Its not as universal as you are suggesting here. I've seen it before but there are certainly no cards like this in the boxes I've inherited.