It seems to me that the point of the method is to turn a Period of time from a FixNum of seconds into a human readable string. I used `less than a second` since that's the Rails standard verbiage for `distance_of_time_in_words` (which reduces a period of time into a human readable string) where a period is less than the lowest significant time period.

`0 seconds` was what I started with, but the tense made that produce badly worded results. If you can point me to a way to determine tense for `0` I'm happy to update the logic, but since all we have in Period is `beginning` and `ending` (and if `value` is zero those are logically the same, and not helpful). 

Both seem to me like they're better than `0 years ago`?