flies in the brain
I just spent a whole day looking at flies under a microscope, and boy - are my eyes tired. I still do not feel confident of my abilities to identify a given family of fly on sight alone, and the keys are poorly executed - only to be followed quickly after developing much familiarity with the individual traits responsible for dividing organisms into one group or another... and I just don't have the practical experience to assess those traits rapidly, and there has been no one to reassure me that I have even reached the correct conclusions for good reasoning - or even the wrong conclusions for the right reasons.
Agck.
Time will tell.