L-istima hija l-prevalment ta' kemm ħin se jieħu x-xogħol; il-ġestjoni tal-jadwal hija l-ippjanar u l-aġġustament madwar dawk il-prevalmenti. Il-verità fundamentali: l-istimi huma ipoteżi probabilistiċi, mhux promessi — u t-trattament tagħhom bħala promessi hija fejn ġej il-biċċa ħamsa tal-problemi sched.
Tekniki ta' stima
✓ BREAK DOWN → estimate small tasks; big things are always underestimated
✓ RELATIVE sizing → story points / t-shirt sizes (S/M/L) over false-precise hours
✓ Use HISTORY → what did similar work actually take? (velocity)
✓ THREE-POINT → best / likely / worst case to capture uncertainty
✓ Involve the people DOING the work — not just the lead
