Has an illusion ever distracted you in your work or helped you focus?

Question: Has an illusion ever distracted you in your work or helped you focus?
- Keywords:
  focus,
  illusion
Asked by anon-227895 to Caroline, Vassilis, Pizza Ka Yee on 14 Nov 2019. This question was also asked by anon-227896, anon-227894, anon-227888, anon-227881.
- Caroline Brett answered on 14 Nov 2019:
  
  Not that I know of, but maybe that’s what it was meant to do

Question: Has an illusion ever distracted you in your work or helped you focus?