[ChicagoBoy11]

It's not that they CAN, its that they HAVE to.

A great teacher will be a great teacher with whatever you give them. But anyone not 100% tuned to that part of their teaching greatly benefits from some of the constraints that chalk gives them.

I'm a K-12 admin and once we had a HS teacher who was brilliant but her classes were often too difficult to follow for the kids. We just told her she couldn't use the powerpoint slides anymore. Yes, there was a huge discussion of timing and pedagogy and all of that, but ultimately, placing that constraint on her naturally put her at a much more equal footing to the students she was trying to teach.

[gowld]

When you try to force could behavior by handciapping people, you also get utter failures like teachers with bad (or too-slow) handwriting who cannot succeed at conveying information via the arbitrary restriction.