Mode "skeptical" does not exist

[CaftBotti]

When I was creating pi creature scenes, I found a special mode called "skeptical", but I didn't find its source file. About 50 other modes are stored in one of my repository, but this mode never exists.

At _2022/borwein/supplements.py, line 307

In 3b1b's video, "skeptical" was performed as "plain".