By proceeding with things that will gather more data—such as prototyping, or further independent research—vs spinning indefinitely on "hypothetical" discussion-only shots.

How do you know if it survives the shot without that, if it's just person A saying "I don't think Python perf will be an issue" and person B saying "I think it will"?

> How do you know if it survives the shot without that, if it's just person A saying "I don't think Python perf will be an issue" and person B saying "I think it will"?

That is the point, knowing that it is a point we want to test is valuable. If person B there didn't say he thought it would be an issue you probably wouldn't have tested it, it was valuable for him to say that.