Turntable speed accuracy

There is another thread (about the NVS table) which has a subordinate discussion about turntable speed accuracy and different methods of checking. Some suggest using the Timeline laser, others use a strobe disk.

I assume everyone agrees that speed accuracy is of utmost importance. What is the best way to verify results? What is the most speed-accurate drive method? And is speed accuracy really the most important consideration for proper turntable design or are there some compromises with certain drive types that make others still viable?
My friend Raul. Thanks, got it!

Or as was once suggested, "it's as clear as mud but it covers the ground."*

* Observation by a non-engineer.
Dear Decibell: Please email me.

Regards and enjoy the music,
Dear Pryso, *now wasn't that non-engineer Harry Belafonte strollin' down the beach in sunny Jamaica with his father who tried to explain to him the thing with the birds and the bees .... ?
Dear Peterayer,
Do understand. Sometimes threads are dissapearing without the community being informed for what reason this was done, if it happens accidentically or because someone asked for deletion. In my case I asked Audiogon. on one thread it was restored, on another thread I did not get any reply, maybe a dealer wasn't` happy - just wondering ...

Best @ Fun Only
hi there-------------------------------testing only.