For certain objects, one of his choices for interaction is “perform experiment on”.
The result is what you see in that screenshot. You can’t see it, but off to the left is his XS 4258p Laptop from Landgraab Industries. Once he was done, the laptop emanated a sort of freaky Matrix-ey effect. Now, whenever someone uses the laptop, that sim acquires a moodlet called “Oddly Powerful”. It gives the sim’s mood a 15-point boost and lasts for two hours.
Out of all of the careers, I still believe that the Science track will offer the most excitement. I’m curious to see all of the little details they put for Sims who follow this path!