Diffusion

I always recommend mentorship to young medical student or doctor who wants to learn medicine.

That is what I'd been doing over the last few weeks when the summer students joined me. Did they learn from me - as a nephrologist - how dialysis works? Not really. For that bit, the students can figure out themselves from the textbooks. It's a good start, of course, to teach them that haemodialysis works under the principle of diffusion.

And that is exactly how mentorship works its magic: by diffusion.