Engineers in particular tend to overvalue precision. I have three engineering degrees, so I think I can speak with some authority here. And I can attest to the fact that when engineers (and others) use extremely precise data, they are often overstating the value of their analysis. Just because they measured the distance between A and B to the micrometer doesn't mean they measured it in a meaningful way.
In mathematics, we talk about "significant figures," but we probably are not sufficiently aware of the presence of "insignificant figures." That is, 3.1415926 is pi to 7 "significant" figures... but depending on the application, those last 5 digits may or may not actually be significant.
So don't tell me it's exactly a 3-minute walk from here to there, when you know full well it takes "approximately 5 minutes." I don't want to hear that the wind is blowing at 42 knots, when clearly it's gusting to roughly 40. And really, finishing 33% of a project isn't any different at all from finishing 30% or 35%.
Don't get me wrong - I like frivolity when it's fun, and I like precision when it's necessary. But I have no interest in the grim frivolity of unnecessary precision.