Code review comment for lp:~andreas-pokorny/mir/libinput-platform-pointer-settings

> > (1) It sounds like we're mixing up the terms "speed" (magnitude of velocity)
> > and "acceleration". Acceleration is the rate of change of velocity. However
> it
> > appears actual acceleration might be always zero, and 'acceleration' here
> > refers to the velocity? Have we confused our physics terminology? If so,
> that
> > should be cleared up...
>
> Yes kind of .. this is an physical inaccuracy that leaks into the software
> from the domain model. Naming it acceleration would be incorrect to. Since the
> cursor speed is actually a scaling of the acceleration curve - which is a
> curve providing the actual speed scale based on the amount of recent movement.
> Where recent movement is the relative steps we were able to observe from the
> device.
>
> I could offer a similar confusing comment to clarify things.

This sounds like a number, not a speed or acceleration. Let's try for clearer terminology.