All the facts are never in.
The real question isn't whether you have all the facts. The real question is, "do I know enough to make a useful decision?" (and no decision is still a decision).
Seth is brilliant. There is a quote by Colin Powell
Use the formula P=40 to 70, in which P stands for the probably of success and the numbers indicate the percentage of information acquired." Part II: "Once the information is in the 40 to 70 range, go with your gut."
You never have all the facts and there is not amount of data that will lead to 100% certainty of making the right choices. If you wait for 100% of the facts, you waited to long.