A lot of discussion on estimation recently. A lot of great arguments but a lot of good old mistakes we’ve already went through. This brought me to a few random thoughts on estimating techniques.
- Estimation technique which involves discussion between different people is better than one which just simply uses their estimates as input.
- Using factual recorded historical data is better than basing just on experience.
- Smaller tasks can be estimated way better than big chunks of work.
- Every estimate starts with some kind of guess at the very beginning.
I know these should be obvious yet I’m surprised how often people:
– forget about them
– deny these are true