From 2014 Celebration of Mind:
Video:
http://www.msri.org/general_events/20854
here the video can be downloaded in mp4 format.
1.
Martin Gardner tribute, a very
"that's just a coincidence"
2.
Dr. Matrix Names
Numerology of Dr. Matrix by Martin Gardner,
- first print: 1968
Matrix, Irving J.
- second print
Matrix, Irving Joshua
666 in Name of Dr. Matrix
https://en.wikipedia.org/wiki/Irving_Joshua_Matrix