Comment by Marazan

And just like the old joke your are missing important practicalities.

Pencils in space were terrible. Small chunks of carbon absorber of and getting in electrics was bad. Pens were a huge improvement.

Likewise I can't only presume you haven't ever cut large quantities of corrugated cardboard with scissors or ever seen a child struggle with the task. This device looks to be a massive utility increase for cardboard cutting for children.