But there are a million ways the Jenga stack could fall: What if the person delivering groceries to the biodome walks by someone who coughs on the lettuce and a week later, a player tests positive? Is there an option other than shutting down the whole operation for 14 days?

“No,” says Bergstrom.

And that’s really the end of the conversation. Even if we can start this, we almost certainly can’t finish it. Just look at South Korea and Japan, which both believed they had the outbreak under control and have since pushed back the start dates of their professional baseball seasons. In response to ESPN’s reporting on the MLB biodome scenario this week, former Medicare and Medicaid head Andy Slavitt tweeted, “I’m as big a sports fan as anybody, but this is reckless. Leagues need to follow the science & do the right thing.”

The leagues know how farfetched their ideas are. So do the players’ unions. They continue to explore options because they would be remiss not to. But fans should understand how unlikely this all is.