It looks like they are headed to a multi-threaded pread implementation now [3] and someone has created a patch to tweak the current mmap fallback that uses pread to perform better in the meantime [4].
[1] - https://www.libtorrent.org/upgrade_to_2.0-ref.html
[2] - https://github.com/arvidn/libtorrent/issues/6667
I guess China is a gone market for tesla at this point.
If you’re a desk jockey, or impact resistance is not a concern, CR-39 will give the least aberration with the exception of crown glass.
The hidden hack here if you need/want impact resistance is to ask for Trivex lenses. Same impact resistance as polycarbonate but much better ABBE value. It’s often overlooked because it costs a little more than polycarbonate and most people don’t complain about the distortion.
Also, anecdotally, you get what you pay for with progressive lenses. I have a cheap lens in my sunglasses and a higher end lens in my daily drivers and I can easily tell the difference.
I just started wearing glasses. I asked about fringing and they had brushed my concerns off as me being new to glasses.
Studs from Microsoft was a parody of this format, with the "studs" replaced by Microsoft programming nerds, from Seattle area sketch comedy show Almost Live!. It is also notable for featuring a pre-Science-Guy Bill Nye.
"You're going to listen to this U2 album, and you're going to like it!" -- Tim Apple