Love this! I’ve been mostly doing my hobbies as work for 20 years, but I’ve been having a blast getting back to deep pure math and PL research in the last 6-12 months which absolutely topped everything. It’s fully targeted towards my business goals which is ideal for me as I need a concrete problem to solve when learning. I’m 40 and this has been intellectually more productive than anything else I’ve done (feels like x times more than what I remember). It’s exciting and inspiring to see others doing it later in life as I wish I could keep doing it too.