Continuing discussing Dr. Dick's comments:

"The indices are indicators as to which argument we are referring to. "

Effectively they are number-tags identifying parts of a single structure.

"Note that, in this case we are talking about the ability of the expression F=0 to constrain the data, not about the value of F. "

Of course, from the constraint at zero; a whole world of possibilities are available to build new things.

"no correct calculation can result in "invalid data")." The reward of honesty might be thus described?

Zero effect is not zero substance. Zero effect is relative to context.

dolphin