There are two accurate forms of software development effort estimation: 1. Guess, double it, and raise it to the next time unit. Example: a 1 day task will ta

There are two accurate forms of software development effort estimation: 1. Guess, double it, and raise it to the next time unit. Example: a 1 day task will take 2 weeks 2. The management inspired "What's the earliest date you can't prove you won't be finished by" system of end date scheduling.