SJT, you're bringing your slant, your personal bias, to the question.
If you mean a closed-minded bias then no.
You don't like 2-QB offenses. Got it. That doesn't mean they don't work.
No. I don't actually care as long as UT wins. However coaches avoid it. It isn't very difficult to imagine many reasons why they avoid it. Some reasons are as practical as the time it takes to practice and perfect a second game plan. Some of it is rhythm and continuity. Some of it is the confidence of both the QB's and the team around them.
There's even a recruiting angle (as there always is). The QB's you want believe they can beat anyone out... they don't want to deal with the idea that they have to share the position.
Your point about proving a negative: sure, you can't prove it. But you can easily disprove it. Just show one case where it was untrue.
Same thing.[/quote] We aren't dealing with absolutes but probabilities. The reason coaches use a 2 QB system only a scant fraction of the time... is that it is unlikely to work.
"The 2-QB system doesn't work" is, as you said, a negative. Impossible to prove. But very easy to disprove: Leak-Tebow. Done.
Did I say it never worked? I may have misspoken but many times I have qualified that it very seldom works.
So then you fall back on "well, it usually doesn't work." But how do you know that? What empirical evidence can you provide? Have you surveyed the history of the college game, counted up all the times a coach used 2 QBs, and then counted up how many of those teams had winning seasons?
Once again you resort to the logical fallacy of asking someone to disprove a negative.
The best and even the most direct proof we have that it seldom works is that coaches aren't clamoring to do it. Coaches are constantly looking for an advantage. If 2 QB systems afforded that advantage... it would catch fire like the spread option and 3-4 did.
1. You heard people whose opinion you trust (your dad, your scout leader, your high school coach, a TV announcer) say so. It became "conventional wisdom" to you.
Nope. The only relevant voices of authority are those making lots of money to make the decision. They overwhelmingly disapprove of it.
2. You apply principles that generally make sense. Like Unity of Command from the principles of war.
Yes and no. I don't think Unity of Command really applies here for reasons you point out. Economy of force or the sin of wasting time may apply from a principles of war perspective. I believe it was von Clausewitz who said you reinforce success. You pour your resources into what will break the opponent's line of defense.
Applied here... that would mean you give your starter max prep time so that he and the O around him can become as tight in execution as possible. Time is limited. Resources are limited.
The whole point of a 2 QB system would be for the 2nd guy to bring something radically different. So what is the trade off in preparation and execution? For Tebow's battering ram package... not much time was required.
3. You're stuck in history. Back in the early days of football, there was no communication between the coach on the sidelines and the players on the field. There were actually rules prohibiting it. The QB (or another player, like the tailback) truly was the commander of the team; he made all the important decisions.
If true, that's well before my time. It has been a long time since I played but we used signals even then. In fact, I think back in the earlier years of CFB the QB was alternated more commonly than now. O's were simple. D's were simple... and there were no limits on practice time.
For whatever reason, you're going on instinct, rather than objective proof. Ask yourself this: how many 2-QB systems have you actually watched in your lifetime? It'll be a low number, probably less than 5. Out of all the teams you pay attention to, over all the seasons you've been watching, it'll probably be a handful or fewer.
Less than 20 for sure.
So how do you know it doesn't work?
Ask yourself why coaches desperate to find an advantage don't do it if it has a reasonable probability of success. There are lots of teams with two good QB's and really nothing much to lose.
p.s. At one point, you tried to make the case that infrequency = failure. That we see 2-QB systems used so infrequently because they don't work. That's a logical fallacy of the nature "correlation does not equal causation."
No. Infrequency equals improbability.
Since you've jogged a few memories... Stonewall Jackson famously violated the principles of war fairly often. Can't remember the field but he once split his force which was half the size of the opposing union force and masterfully used other advantages to make it work.
That doesn't mean that the "law" that you never split your force doesn't apply the vast majority of the time.
2-QB offenses are rare primarily because it's uncommon for two players, two QBs, to be equally qualified. One usually has a leg up on the other. And you go with your best player. So 1-QB is the norm.
Every report I've seen suggests that Dormady had that leg up in the spring and has never lost it. The clamoring for 2 QB's is primarily from those excited about JG or convinced by their own bias that he should be the QB.
FWIW, it isn't all that uncommon for good teams to have 2 QB's worthy of starting. Even Peterman has now proven that he was worthy of a CFB starting job... and apparently a spot on an NFL roster. Jones did PRECISELY the right thing by starting and sticking with Dobbs. That situation lent itself to a 2 QB system more than the current one. They brought very different things to the field.