[flukus]

> Then I took this information to my CEO, who shot me down on the basis that all their customers used floating point for their internal models, and so I'd be needlessly introducing friction.

Sounds like all there customers had already worked around the bugs and they didn't want to backtrack. Floating point can be horrible because not only do both sides have to use it but they have to process their calculations in the exact same way with the same order, with decimal types you will get consistent results.

Throw in some other complexities like different clients using different value precisions, different currencies having different fractional values (japan has no decimal places, a Kuwait cent is a thousandth of a dollar) combinations of those two and more, then using decimals/money types are just easier.