There's another rash of Twitter posters supporting the conjecture that decisions can be made about how to spend other people's money without estimating the impact and outcome of that decision. This is a core premise of #NoEstimates from the Original Poster
Here's a starting point to learn that is simply not true...
- Theory of Decision under Uncertainty, Itzhak Gilboa, July 2008
- Decision Analysis for the Professional
- Managerial Decision Making Under Risk and Uncertainty Ari Riabacke
There are 100's more books, papers, conference proceedings on the topic of decision making in the presence of uncertanty.
It comes down to a simple concept
All project work is uncertain. Reducible uncertainties (epistemic) and irreducible uncertainties (aleatory) are present on all projects. When money is being provided to develop software, those providing the money have a reasonable expectation to know something about when you will be providing the value in exchange for that money, how much money will be required to provide that value, and what capabilities will be provided in exchange for that money. The field of study where these questions and answers live is microeconomics of decision making. Software development decision making is a well studied subset of that field.
When it is conjectured decisions can be made in the presence of uncertanty without estimates - like the Original Poster did, and there is no supporting theory, principle, practices, or evidence of how that can be done - run away - it's a bogus claim.