P.T. Barnum's maxim exists because people do not think critically. Never have, never will. A person may think critically. But people do not. And that is where the danger to society lies.
A person is smart. People are dumb, panicky dangerous animals and you know it. -- Agent K; Men in Black
Each month (30 days) has 43200 minutes (30 * 24 * 60), and each song is about 4 minutes long, give or take. I could only listen to about 10,000 songs if that's all I did 24/7. But, you know, I sleep, I talk to people, I read, I work. So my music listening accounts for a much smaller part of my day. Maybe 4 hours worth (but in reality, much less because I tend to spend more time listening to podcasts). So I listen to 10-15 songs a day. I'm not a teenager, but even a teenager has to turn the music off at school.
So, yeah, math...
The Z-80 instruction set. (TRS-80 nerd in the house.)
This [PDF] still sits on my bookshelf.
Surprise due today. Also the rent.