> Sans Forgetica is more difficult to read than most typefaces – and that’s by design. The 'desirable difficulty' you experience when reading information formatted in Sans Forgetica prompts your brain to engage in deeper processing

Based on this logic - harder the process better the processing - its obviously a mistake that schools are increasingly using technology to teach, like visualizing geometric shapes on screen in 3D instead of painstakingly drawing on the board and letting students see it in their heads.