[jimbokun]

This applies to you, too. What controlled experiments have you performed to test productivity differences of different methods of programming?

[khedoros1]

Jackmott didn't make a claim. The linked PDF did. Why should someone have to support a claim that they didn't make?

[dasfasf]

Jackmott is the one who introduced the standard of "controlled experiments". Why doesn't he propose an experiment design which will shed light on the question of whether classes are harmful or not?