If you have done it before it's easy to estimate how much it's going to take. Some things are actually really hard to estimate, like estimating how much root ca

If you have done it before it's easy to estimate how much it's going to take. Some things are actually really hard to estimate, like estimating how much root causing and fixing a bug will take. Now, if you want to estimate properly... ask for a min time estimate, max time estimate, and confidence level. To say "I am not sure", is actually fine. That can be the start of a conversation where you can have the opportunity to improve that estimate. Whereas a closed answer like "4 hours" won't.