No, don't log the things you have learned. Log everything you do. That includes hopeful ideas that don't work out, the false starts, the dead ends. The main purpose of an engineering journal is to prove you have done the work. Not only does this to support claims of patent, it improves your learning. You learn a lot more from your mistakes.
Nobody goes directly from point A to B. It is the bad ideas that prove a journal is real. Any journal that contains only the good stuff is useless.
Authored Comments
No, don't log the things you have learned. Log everything you do. That includes hopeful ideas that don't work out, the false starts, the dead ends. The main purpose of an engineering journal is to prove you have done the work. Not only does this to support claims of patent, it improves your learning. You learn a lot more from your mistakes.
Nobody goes directly from point A to B. It is the bad ideas that prove a journal is real. Any journal that contains only the good stuff is useless.
It is also a valuable tool for those who inherit your projects.