I never took the position geoengineering requires visible contrails . . .
George B said:And are there not pictures of what people think are chemtrails all over the place ??
So you suggest that those pictures of contrails are good as evidence of Chemtrails as photos of the F117A were as evidence that a secret aircraft was in development. But you simultaneously hold that the whole chemtrail program is likely totally covert with spraying deliberately done in such a way as to avoid detection.
Those are contradictory positions.