Why should they have to do this? Is a carpenter required to explain to an interior designer why they have a preference for a particular type of chisel?

This entire subtree of discussion has convinced me that developers should not be trusted with metaphors, let alone chisels.

If it gets me into webshit weekly it'll all have been worth it.

If they're asking the interior designer to buy it over some other chisel, probably

Why would a carpenter ask an interior designer to buy a chisel? I'm pretty sure that the interior designer just wants the furniture and trusts the carpenter to have the right tools to make it.

I don't know, it's a poor metaphor.

He does need to justify his choice of materials and his approach -- certainly by the time he is bringing in heavy machinery. This metaphor is too muddled to tell us much.

I did have to explain jrebel (java class reloading while running) to a manager lately, so it definitely happens

Yes, of course. This chisel damages my designs on the table, can we use a softer one? No, we can’t because the material the table is made of won’t be malleable to any softer chisel.

That's not a problem with the chisel, that's a problem with the carpenter. The chisel should be wholly abstracted away from the designer's perspective.

That requires a higher level of trust in the carpenter to simply do the right thing.

In the absence of sufficient trust, a definitive explanation is always required for a party to be at ease.