"TEPaul,
The question is not posed in the context of a single, universal speed, or any speed, rather, it addresses the creative process in golf course architecture, design principles.
If speed dictates architecture, then you get mundane flat greens.
If architecture dictates speed then you get contour and/or slope.
Now do you see, grasshopper?"
Patrick:
Once again you don't comprehend much. I did not suggest that there should be some single universal green speed. What I said is that it's my belief that there should be a universal LIMITATION on green speed----and that, in my opinion, is in the neighborhood of the 10-11 differential. If any course feels that the reasonable maximum for their greens is 5 or 8 or something below the differential of 10-11, then fine.
Furthermore, you seem to be suggesting that architecture dictate putting speed. Would you mind telling us how you feel that would happen or could happen? Did it happen in the past? Of course it didn't and the reason why is that architecture can't dictate putting speeds as we've been seeing for a number of decades now. What needs to dictate putting speed generally is a far better understanding that there needs to be a limitation putting speed. At this time there is little to no understanding or acceptance of that fact.
So, if that is true, as I see it (and apparently the USGA's competitons director sees it and Thom Nickolai who created a green speed analysis process sees it) that limitation lies in the 10-11 differential for many but not all existing greens.
We may think we are innovative in many ways but one thing none of us is going to alter is physics, and that's what relates directly to the playability of green speed and existing putting greens.
However, if some architects want to get into designing and building some greens with the radical contours of MacKenzie's infamous green at Sitwell Park, then obviously that would dictate a reasonable maximum green speed of perhaps 5 or so on the stimpmeter.
Personally, I think greens like that are silly and frankly are nowhere near as interesting, challenging or fun at 5-6-7 as greens like Merion's or PVGC's at 10-11.