[Bill Cummings]

I found this over on the Oz Report. Regarding safety.
http://www.msf-usa.org/motion.html

[Bob Kuczewski]

Hey Bill,

That was pretty cool!!!

In fact, I thought it was so cool, that I wrote a Java program to run that same simulation and generate an animated GIF file:

plus_frame1.gif (234.39 KiB) Viewed 2844 times

For some reason, it doesn't rotate as fast here as it does when I display the GIF on my local computer. Hmmm....

[JoeF]

Bill,
something not mentioned in the article:
When sqinking, so that the blue crosses are partially blanked, then I see the yellow dots continuously. Full gaze gives the disappearing act. So, in flying, perhaps: blink, squink, close eyes for reopening, change targets and return. That lurking UFO may return!
JoeF

[Bill Cummings]

Looking just slightly cross eyed once per second works too