估算很困难，因为软件充满了未知因素。目标不是错误的精确性，而是一个现实的、诚实沟通的范围，帮助业务进行规划。优秀的TL会估算范围、表明风险，并在学习过程中重新预测。
如何更好地进行估算
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✓ Break work down — small tasks estimate far better than big ones
✓ Estimate as a RANGE or confidence ("2-4 weeks, 70% confident")
✓ Include the invisible work — testing, review, deployment, unknowns
✓ Use history — what did similar work actually take?
✓ Involve the people doing the work — not just you
✓ Separate ESTIMATE from COMMITMENT (deadlines are negotiated, not guessed)
一个具体的例子
当被问