I enjoyed this episode. I did find it intriguing that it is credited with being, at least in part, as the source material for Star Trek's TOS episode 1-18: Arena. One of my favorites, and certainly one of the most recognizable episodes of the series.
Distinctive differences, well narrated, and some back story on inspirations to the best sf series of its time. All pluses.
Carson's conundrum peels the fleshy bits from a human hide to expose the instinctual nature that endures inside. Given a winner takes all inevitability, his immediate reaction was so replete with fear as to ask the roller if we can co-exist in peace. Once rebuked, it was on.
As efforts fail repeatedly by each opponent to gain advantage to destroy their enemy, Carson, though near delirium, relents to help a suffering lizard that he thought had previously met its demise at the end of the clawed tentacles of the roller (wait...the psilocybin is kicking in) by killing it. This marks the most significant difference between combatants, compassion. Lets not try to get too deep into that, he was tired, trippin' and annoyed that the other lizard was a chatty mo fo' trying to help his lizard bro. That sensibility was the most marked difference between the two.
This episode isn't that deep and I like to keep it that way.
Oh, BTW, and let me know if I did wrong. I posted on IMDB a link to the podcast, and attempted to introduce a new audience to escape artists.