This is sad.
How, why? What’s the point in such an underwhelming comment?
I at least feel sorry for the poor rat. If the rat could choose what to do it would probably not want to be fixated in this experimental setup.
Running around a game while drinking sugar water doesn’t sound that different from what some people teach their kids to do on a computer.
Except for the physical exercise part.
According to the post, it took weeks to get the rats trained/accustomed enough to get dressed in the harness. If they really didn’t want to do this, it definitely looks like they had a choice. If they can be taught how to use the setup, they definitely got the harness-experiment association as well.