Flash Sync

Just when I thought I have it down like long time ago, I got confused again, none other than from Nikon USA, or in this case Dave Black or the editor or both of them. http://www.nikonusa.com/en/learn-and-explore/article/huceaq1c/using-auto-fp-high-speed-sync-to-illuminate-fast-sports-action.html

My understanding (mind you, I always got things wrong) is Auto FP doesn't stop fast action.  Auto FP provides pulses of light continuously for the duration of the shutter staying open.  Essentially FP sync is like sunlight or continuous lighting.

Apparently Dave Black's article kind of implies or states that FP high speed sync stops action or has to do with shooting actions.  I know it says illuminate fast sports action.  FP high speed, in my mind, has to do with using a bigger aperture, the fact that it uses a high speed is just incidental and not an end as to stop action.  Because it can't.  Of course, Dave Black proves otherwise or so it seems.

So once again, I am confused.

Since I am pretty much a desktop photographer, I can't be or won't be testing what I read.

Here is another article on the topic, the guy is apparently a genius.

http://www.scantips.com/lights/flashbasics2b.html