Lon.Lieberman

1. Общност
2. Technical Issues and Workarounds
3. Known Issue (September 2016): Site slowness, red error bars, and other performance issues

as of 20MAR17 I get the red(mine as pink) bar, No credits for watching most of the videos (but some)  and problem sets do not show up.  This has been a problem for a bit - took me from an everyday ...