What if the level of precision is posed as "within X months"? 5.5 years is just 66 months... The claim that an estimate of 5.5 years is "a level of precision

What if the level of precision is posed as "within X months"? 5.5 years is just 66 months... The claim that an estimate of 5.5 years is "a level of precision that is entirely unrealistic for non physical processes" is absurd. In this context, how can you possibly believe that businesses and organizations worldwide are not capable of estimating non-physical procesess to within a month?