Insufficient Data
Acting without sufficient data is often considered rash and foolhardy.
Of course, in some instances it is completely unavoidable.
The dividing line between how much data is enough varies by the circumstances.
Lots of factors go into the decision of when you have enough data to act on.
It is an interesting equation to look at involving uncertainty and upside vs downside risk.
Sometimes waiting for more data is just as risky as acting with insufficient data.