reach the interested people first (at least for _this_ talk.)

subexercise – evolving code

lots of students
problems because of few resources
frustrating to be a teacher and not be able to teach properly
what's holding them back?
you want to be able to teach better
you want to be able to get the message across
because the worst thing you can face each day is a classroom of bored, unmotivated, uninterested students who aren't learning
and it's painful to check exams and see a lot of failing marks
it hurts because you feel inadequate. you're not getting the job done.

if it's just a living
if the results of their teaching are good
other people will notice
there is a direct benefit
if they perform better in future classes

if we teach well the first time around, less need for reteaching
good recommendation letters
develop creativity and problem-solving (for teachers)