Pure, unblemished, immaculate.
Of the Caucasian race; white.
A shade of the color white.
Innocent, having a reputation beyond reproach.
Capable of being shaped; malleable.
Easy to deal with or manage
Capable of being easily led, taught, or managed.
Sufficiently operationalizable or useful to allow a mathematical calculation to proceed toward a solution.
Algorithmically solvable fast enough to be practically relevant, typically in polynomial time.