For some people - people learn and remember in different ways and writing by hand (if physically difficult, say you have an essential tremor (points at self)) c

For some people - people learn and remember in different ways and writing by hand (if physically difficult, say you have an essential tremor (points at self)) can require enough focus that it actually makes it difficult to retain information instead being overly focused. Different folks have different learning and retention habits and while these sorts of articles are helpful in learning methods that are commonly useful they shouldn't be taken as gospel.