In the proof we constructed, for sufficiently large N, a suitable updating function f for Boolean systems B = ( 2 N, f ) such that f was cooperative, bi-quadratic, and worked as required.
Constructing autonomous agents that will work as required is much harder.
One major problem with many of the active drive mechanisms currently under consideration is that if the drive system works as required it will be extremely difficult to recall the construct after release in the case of unforeseen negative consequences (although some traits, such as HEGs, can be theoretically recalled by releasing insects carrying resistance alleles; 19).
Unlike sudoku, though, in which the numbers act solely as symbols (letters or pictures would work as well), KenKen requires arithmetic.
She arrived on time and worked as long as the director required her to.
This approach did not work as well with plants that required very long vernalization, because identifying a vernalization period that reliably resulted in reasonably-sized plants was difficult.
And some families are so mired in conflict that they cannot work together as required by the family-based treatment.
Further tinkering with the wording is called for to make it all work as required.
The report said Mr. Vargas did not conduct a final inspection of the work, as required by city regulations.
"Unfortunately, it remains clear that you are not prepared to publish a 'faithful and accurate' translation of the work as required by our contract".
