Clem Cole wrote:
> Stanford had a DEC System-20 called 'LOTS' which they bought for the
> undergrads for teaching.​ Somebody (who will be left nameless) modified
> the OS so the 'running' part changed depending on value of the load
> average. i.e.  running, jogging, walking, crawling.

Another PDP-10 operating system (from MIT) had this:
Warp (fastest), zoom, fly, run, walk, tenex, multix (slowest).