Wikipedia:Articles for deletion/Rational numerals
The new source is just an interview with the author. It is not  |secondary source. And in the video  Tenisons does neither explained what is Rational numerals nor said anything about it. So it is not secondary source either
— User:Alexei, 09:32, 4 March 2017 (UTC)
Stance: delete
Cited policy: WP:SECONDARY (Wikipedia:No original research)