may just end up detecting many small cancers
Exactly. ISTR reading that at any one time, most people have dozens of small 'cancers' but in most cases, the body destroys them before they get a hold. It's only when our own defences fail that the cancer goes on to become a 'proper' one and become a health hazard.
That means, if you start December 1, then on January 1 you can submit your invoice for December. At the end of January you get paid for that invoice (for the work you did in December).
But on the plus side, the other end you can put your feet up for a few weeks and still get paid!
Continued in alt.glass.half.full
The key elements in human thinking are not numbers but labels of fuzzy sets. -- L. Zadeh