If you are "doing conversions all over the place", you are looking at a fundamentally flawed code design that costs you performance. Ensuring consistency of cov

If you are "doing conversions all over the place", you are looking at a fundamentally flawed code design that costs you performance. Ensuring consistency of coversions here is like painting a house whose roof's on fire. C/F example is synthetic, but it doesn't make it any good - if you are operating with data that can be expressed in different units, then pick a single unit, stick with it throught the code and convert only when displaying (or passing to external party code).