[AndrewC]

To which I pointed out that a valid argument may have false premises and a true conclusion.

Valid has more than one meaning. I put quotes around it. You asked me what I considered invalid. I answered you.

val·id   Pronunciation Key  (vld)
adj.

1. Well grounded; just: a valid objection.

I do not consider it a "valid" use of the experimental results. Why? Because I do accept the premise. Therefore it is not well grounded to me.

[AndrewC]

Why? Because I do accept the premise.

Should be ---do not accept the premise.

[general_re]

"That's my opinion and I'm sticking to it." Well, okay, so long as you realize that the conclusion is not objectively invalidated by a flawed premise, nor by your refusal to accept it as valid.