Sure enough, it’s not long before we see that Sheldon is enjoying his experience and beginning to see pretty colors, while Amy is inundated with visions of Ms. Davis telling her she’s letting everyone down which then turn into visions of the hundreds of female scientists who won’t have her as an inspiration flooding her mind as they yell the same angry words at her.
As they prepare to enter the tanks, the operator tells them that people sometimes have very different reactions to floating in a completely dark tank with no sounds or other external stimuli, but if they feel uncomfortable they can hit a panic button.