As I recall, Nebraska was also bragging about the superiority of their weight training program at the same time that the rest of the football community had discovered the concept that "speed kills."
To be clear, Nebraska was bragging about it's weight training program in 1972, when they were the only team in the country to lift weights year round. Others believed that lifting was bad because, while it made you stronger, it also made you bulkier and slower, whereas Nebraska found that if you lifted properly, it made you not only stronger, but faster and more explosive. That weight training program was the reason that the 1972 Nebraska team was so dominant, and after that year, everyone copied the Nebraska methods.
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And if you read on instead of cherry picking the bad parts ... it also says programs that have been consistently dominant have had success with new hires.
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I think Ohio history concurs with the article's conclusions, that after a program is consistently dominant, they will be at least "OK" with the next coach. The mystery hire is the third coach.
Dominant coach=Peden 121-46-11 .711
Successor= Widdoes 42-36-5 .536
3rd Coach= Hess 108-91-4 .542
Dominant Coach=Hess 108-91-4 .542
Successor= Burke 31-34-1 .478 (if you skip Kappes, who was temporary)
3rd Coach= Bryant 9-44-2 .182
Dominant Coach=Grobe 33-33-1 .500
Successor=Knorr 11-35 .239
3rd Coach=Solich 106-76 .582
So, 2 out of 3 times, Ohio got someone decent as the successor. Also, 2 out of 3 times, the 3rd coach was good. Once the program fell into a bad state, however, finding someone to lift it out was difficult.