So if you see a snooker player bring his cue into the shot from the side, your assumption is that of "this must be a visual sweep to the cue ball" thing?
-Sean
No, I don't think it's only that. Here's a related post from Stan 15 months ago:
... I worked with Allison Fisher in September of 2011 at her home. I picked her brain concerning this very topic.
Allison does perceive a shot line at ball address but after that "shot line perception" she slightly adjusts her stance, MINUTELY producing an offset, and she then bends into the shot line. Allison was very clear about this.
She liked the PRO ONE visual references for the repeatability factor when we discussed her offset. Allison is a technician and does NOT keep her eyes on the PERCEIVED shot line from ball address all the way to full stance. I got that info first-hand. ...
I'm no snooker expert. But I do believe Stan's claim about snooker players goes against conventional wisdom. Perhaps it would be fine if he just said that some snooker pros sweep in from an offset rather than implying that they all do.