Write a research proposal topic justification for a research topic that could be theoretically carried out at graduate level.
Due on Wednesday, still sorting out my topic and cross-checking it with previous research to: (a) make sure it hasn't already been done; (b) is actually a legitimate research topic and my ideas aren't flawed, and (c) is actually worth doing.
My sources folder has a little under 50 (and counting) research publications I've flicked through multiple times. I've spent all day looking at images like the one below

That's part of a tooth by the way. Points to anyone who can tell me what the lines are called that the big arrows are pointing to

Sorry for the venting.