[EForEndeavour]

> just tell them you'll deliver when it's done

Not trying to be facetious here: I'd love to have this level of freedom from deadlines, but the grim reality is that it'll remain fantasy for most people at most stages in their careers.

Me: "I'll deliver when it's done."

High school teacher: "Suit yourself. You'll lose 10% of your final grade for every day it's late."

Government: "We've assessed a late fine because you missed our entirely arbitrarily set tax filing deadline."

Grad school supervisor: "You submitted the final copy of your dissertation four days after the administrative deadline, so you're stuck paying another semester's tuition."

Boss: "You're fired."

[WrtCdEvrydy]

The book doesn't say to defy deadlines... it just states that almost every negotiation has the deadline being an arbitrary thing being chosen at random.