The saying "if you didn’t write it down, then you didn’t do it," mean that a person have to write everything or record everything even the smallest record. if you didn't record anything its means you did not it any work.
keep records requires attentional concentrating, forethought, mental organising, and reflective thought, among other qualities, it may help cognitive capabilities because practise and reinforcement help these abilities become more refined
this record helps us to solve any equation or problem An efficient record can help your business improve the quality of work by enabling measurement and intervention. that is why writing down anything means doing things.
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