RE: Proposal to combine 3.2 and 3.3

I like it. have a question about
Normative inclusions and exclusions:
1. This checkpoint does not apply for content the user agent cannot
deterministically recognize as audio, video, animated images, or
animated/blinking text.

what is "deterministically", is it something UAAG needs to define or
explain. Is deterministically the application side of WCAG's
"programmatically determinable"?

Jim