the nfl hadn't seen the read option and didn't have an answer for it. it's in the surprise/trick play category now. it's been caught up to. mm/rodgers have even used it now and then with success.
via Pro Football Focus
"But he won't stay in the pocket and run my offense..."
Good! Especially if you are Chip Kelly.
Bud Adams told me the franchise he admired the most was the Kansas City Chiefs. Then he asked for more hookers and blow.