My how things change

Before you are a professor:

"OMG, I cannot believe the professor's slides have typos in them. And a boring PPT template. And looks like it was written in 1983. Oh, and, like, OMG, don't they know we don't use gopher anymore??"

After you are a professor:

Hmm... will they notice the mustard stain? 

Yeah. It's that bad, folks. I have typos! Spelling errors! Ugly slides that are from 1983! And despite my best efforts, large parts of my lectures are BORING!

My dear professors of yesteryear, I am sorry for judging. I get it now.