I've solved so many of these uncertain problems by tossing coins. Once I make a decision, everyone comes out with reasons I'm wrong and just tells me what they want. Or, everyone accepts it and moves on and it is obvious nobody actually cares.
This 100%. I've learnt the hard way that the only way to get unstuck at this kind of hellish work is random action - I'm biased to over-analyzing the problem so get stuck because I can't pick an option. A bias towards action, ANY/RANDOM action if you can't decide is what seems to help here best!
If alternatives are actually equivalent, and that yields ambiguity in decision making, that's the worst time to go deep diving. "Resolve it and move on" is just a bias of mine.
It's ok, we'll probably never work together.
You are suggesting to not search for that additional separating criteria and just use a coin flip to decide. Apparently you prefer a coworker that would flip a coin in order to move forward with a decision as soon as possible.
The other poster is saying the flipping a coin is the same as staying ignorant of that additional separating criteria. Apparently he'd prefer a coworker that wouldn't stay ignorant by choosing to flip a coin.
"Write one to throw away" is the greatest advice I've heard for our field. You will rarely fully explore the problem space by just talking about it ahead of time.