[ruggeri]

You’ve been downvoted by others because this is lazy stereotyping.

[OutOfHere]

By your logic, anything that satisfies Occam's razor is lazy stereotyping. And that doesn't make the idea unlikely anyway.

[UncleMeat]

Given how few disgruntled students murder their professors, no it would not be the Occam's Razor conclusion that the murderer was a disgruntled student.

[dmoy]

Finals not being over might make the idea unlikely