Reality vs Theory:
"Theory is great"
When competing in Hawaii Karate Congress open tournaments in the 1980's. Still being affiliated with JKA at the time, one of our more hardcore branch dojo JKA instructors was actually telling Shihan Funakoshi how easy it would be to beat the Hawaii Karate Congress competitors, This hardcore JKA instructor claimed he knew how to teach his students to beat the best in Hawaii(including me the top rated HKC fighter that year). So this instructor was going to prove it, he entered his top student in the black belt kumite division.
"Theory goes out the window"
Being from our dojo, i wanted to see our JKA dojo succeed against other styles and dojos also. Well, in the first round this hardcore instructors top student got "thrown" by a very high level Shito Ryu stylist and got his shoulder broken and lost the match on a ippon. END OF THAT THEORY.
To all Karateka, Kumite techniques may look easy and theories may seem to work on color belts and stationary "uke" in your own dojo. But when you compete on a high level, the competitors are very skilled,fast and strong with good understanding of "go no sen" and "sen no sen". Tournament experience lets a Karateka understand what actually "works" against a unwilling,dynamic and person trying to hit you back. WINNING a tournament is not the main objective, just entering and getting the experience teaches you more about "REALITY".