Sometimes to get to coherence, you need to put on blinders.

If the team doesn't have blinders on, then every idea that could be good distracts everyone.

It's like entropy eroding the momentum.

Putting on blinders helps focus energy and make sure that something happens.

Once it gets to the point of viability it becomes self-cohering; everyone can see it's working and see that iteratively improving it to get more momentum makes sense.

But putting on blinders is dangerous!

You could miss opportunities or threats outside of your view.

The more momentum you have, the less you should have blinders on.

At least one person who is well-respected and will be listened to if they raise a concern should not have blinders on at all times.