Just the opposite. I shouldn’t have to explain that to someone who projects such intelligence.
Please clarify and explain, then. I believe that if a contested convention simply results in people finally aligning behind the candidate with the most delegates even if this candidate, like all others, was unable to gather a required majority in first ballot, then, fine. But if a contested convention results in a candidate with the most delegates not being nominated, and this candidate who gets thwarted this way is Bernie, even I, not a Bernie fan by any means (but willing to vote for him and support him if he wins) would be outraged and would have a hard time supporting the nominee, let alone Bernie fans.
If there is a contested convention with Bernie ahead but he ends up losing, then the vast majority of his supporters will sit out, vote third party, or even vote for Trump, and there is no way in hell that the Dem nominee out of the convention will win the election. You better have a very good explanation to convince me that this won't be the case.
Say, Bernie has 45% of the delegates. Bloomberg has 15%. Other candidates split the other 40%. Then the party manages to nominate Bloomberg.
Immediately there will be the wildest conspiracy theories that Bloomberg bribed people with his billions and bought the nomination.
Try to beat Trump with this kind of sentiment. It's not going to happen.
Or, like you suggested, the convention gets Senator Sherrod Brown out of a hat. Whoa. What is made of the will of the people, of the MILLIONS of Dem primary voters who earnestly supported Bernie and Biden and Warren and Buttigieg and Klobuchar etc., who will then say, OK, our opinion counts for nothing, the party goes and gets someone else who wasn't even running, why have primaries, then? Again, not a great feeling to go and beat Trump, regardless of the fact that Sherrod Brown is actually very nice (I wish Hillary had picked him and not the very bland Tim Kaine) and would be a good bridge between moderates and progressives. Remember, Brown said he doesn't even want the veep position, much less the presidency. He was invited to run and said he wasn't interested. And then suddenly he is the nominee?
Even in terms of name recognition and broad national support, he would start too late. No, that's not a good idea.
Sherrod Brown would have had a very good shot if he had accepted to run. As a latecomer without the legitimacy of the popular vote, in a contested convention, he wouldn't beat Trump, especially not without the support of a huge chunk of the voters of the candidate with the most delegates, who would feel cheated and robbed.