...at least when it comes to science at our house. Here are the boys spontaneously role playing together. Ds#1 and Ds#2 are surgeons--see, they have their masks on. They are cardiac surgeons, specifically, performing an open heart on Ds#3. They even fully draped the patient so that only the critical area is in the work window (I have no idea where they picked that up!)
I understand the patient did well.