[JoshTriplett]

> So the logic was resulting in an age of -1 (since DOB was prior coverage start date), which wrapped around to 255

I really look forward to human ages breaking your assumption that they fit in 8 bits.

[OJFord]

If the fix was to make it signed, that might not be so far off!

[NauticalStu]

0.001K ought to be enough for anyone.