PSI for road bike tires?

[Seajay]

. You also need to take into account that there is less rolling resistance (though this depends on the specific tire design) with higher pressure which may translate into a faster ride (make more of a difference in the forward direction) than diffusing some of the vertical shock.

Hi Aicabsolut,
Please keep in mind..I'm just having a conversation here....I know forums can seem a tad confrontational sometimes....this is not one of those times.
From the reasoning above...a completely rigid (but lightweight) tire would be fastest. ie something like a rubber coated rim. Yet no one does this... even in the straight line speed world of human powered speed records.
Speaking with Phil White of Cervelo cycles...he claims his Test Team ride 95 to 100 psi on their road bikes. Just experimenting, I've played around with pressures as low as 60psi and have never felt it was as draggy as you describe.
I guess I'm wondering what evidence you are citing to make your case.
Have a great day !

I guess I should add in that in the unlikely event "we" are riding on a brand new, glass smooth road it would be fastest to run as high a pressure as possible. But this only further makes my case that smooth is fast.