Designing for Users With Dyscalculia or Loom Numeracy

Dyscalculia affects between 3% and 7% according to experts worldwide. There are reasons you could develop it later in life as well because that would be like a acquired dyscalculia where someone perhaps develops dementia or has some sort of brain damage. The poster is assigned two columns with the title, Designing for Users with Dyscalculia or Loom Numeracy. And the left column says do and lists items that you should be doing. And the right column lists do not. It doesn't say don't. I think they've deliberately written out as do not there.