Ask HN: Can you share any decision-making spreadsheets?

I'm interested in discussing tools and spreadsheets we currently use for decision-making e.g.

- What works well and what do you find unsatisfactory with them?

- Are you happy with the decisions you have made with them?

- Can you share any examples?

The background is that I'm building https://thorny.io - an interactive notebook for decision-making. I want to make the decisions and reasoning we face designing software and running businesses, fast and easy. You can post your examples here or drop me a line: duncan at thorny.io.