As it stands, more and more college level teaching is being done by non tenure track employees. Also, the non-tenure-track teaching jobs are a miserable grind.

As it stands, more and more college level teaching is being done by non tenure track employees. Also, the non-tenure-track teaching jobs are a miserable grind. The thousand year old college system has evolved continuously from decade to decade, and is not the same thing that it was, even 50 years ago.