I work in a field (marketing/tech) where everyone is 100% sure of their opinion. THIS is the strategy to take. THIS is a good idea. THIS is a how to execute it. But not everything is black and white. And it would help a lot of discussions to add a bit of color to these opinions.
It's a stark contrast with finance and investing (and even things like poker for cards players out there) where all moves are weighted for their probability of success. THIS strategy has a 35% chance of working but the upside is X. THIS idea is a good one, under these 3 assumptions. THIS is how it's being executed, 50% of the times it works.
Here's a great thought by Shane Parrish about certainty and how to express it to foster better conversations: