In the thread that you answered questions on how to structure a 100 and 110 mile week, you stated 3 things that may lead to burnout or injury:
"If only I had a dollar for every stubborn athlete that claimed increasing mileage (by default a low impact activity) would cause burnout or injury, yet turn around and do the same damn stupid things I've seen over and over again: 1) disproportionate long runs, 3) too hard and too few tempo runs, 3) trying to "keep up" in interval sessions."
Regarding the second part of the second point: "too few tempo runs" are you implying that if people run easy most or all of the time and don't do enough tempo runs that this may lead to brunout or injury? Or are you reffering to people who may stagnate or not improve because they are not mixing things up a bit?
Back in the 70's when you were in high school and there were alot of people around 9:00mins for 2 miles did most of them ramp up the mileage like you have advocated?
Thank you for taking the time to answer these questions