Why are we not comparing infection and death rates from people who take hydroxychloroquine long-term (e.g. lupus patients) against non-takers of this drug with the same overall demographics to determine efficacy?
This. I took all the Spanish available to me in middle school through undergrad. Moved to Honduras, and I could barely understand anything. Watching Honduran TV with Spanish subtitles, and spending a lot of time around people who didn't speak English, worked... although it was a good four or five years before I could think and speak in Spanish. Still, worth it!
Ten years old, typing BASIC games into a TRS-80 Model I from a book. Then at eleven, got a C-64 for Xmas, and taught myself BASIC and 6502 assembly. I had to learn assembly because BASIC couldn't handle the I/O speed of 2400 baud :-D
Now I write encryption libraries for a Major Cloud Provider
nb: I am not affiliated with this chan, just a fan.