The dwarf Vamana asks the king Mahabali for three paces of land. The king laughs at such an insignificant request and hastily agrees. Then Vamana grows to a giant size, covering the distance from the earth to the heavens in one step, then from the heavens to the nether-world with the second step and then claims the king himself with the third step.
Just goes to show, if you’re asking for an estimate for a project, you have to make sure your scale of measure of measurement is the same as the other person. Is it 3 months? Is it 3 FTE months (meaning the project time reduces with every additional person added)? Does that include testing and delivery? Does that include requirements study? Does that include a buffer time in case something gets delayed?