I've never been a grad student, so this is pure supposition, but...
I suspect that if you went into a PhD program and tried to hand in a thesis six months later, the response that you'd get from on high is "Ha ha, very funny. Come back in three years", and that this response would happen whether or not you produced something that's actually good enough to be a proper thesis. Profs know how long a doctorate is "supposed to" take, and doing it in a tenth of that time will set off alarm bells for them.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Previous Open Thread
Next Open Thread
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.