[tehbeard]

Convincing a client to pay for time to spend checking the design and tweaking it in the space between the breakpoints can be more hassle than it's worth.

That said, sane breakpoints can usually avoid unexpected hamburgers on the desktop.

[dstick]

Agreed, Tablet is the only intermediate I consider. The rest is just not worth the time investment.

[iamben]

What tablet? Aren't we talking pretty much anything between about ~500px and ~1200px here? That's pretty much tablet zone...

[dstick]

You caught me, for me that means col-md with Bootstrap ;-)

[paledot]

You convince them in the same way you convince a PM to give you time to write tests for your work: you don't give them an alternative. "You want this done? That'll be 20 billable hours." And your estimate includes the time needed to do work you're willing to sign your name to. When I hire a plumber or an architect, I tell them what needs doing, but I expect and trust that they'll put in the work (and bill me accordingly) to ensure that it gets done properly, even though I don't understand all of the specifics of what doing those jobs properly entails.