Meadow Brown

I am fairly confident that this is a Meadow Brown after comparing it on a butterfly ID site. There are so many subjects to try and remember, eg butterflies, moths, wild flowers, birds, animals,  etc; etc;
Add to this passwords, pin numbers, dates, names of people, things, places, then there are appointments, various medication to take.
Now comes the big problem, my tiny brain is old and full of rubbish gathered over years, and there is no re-cycle bin which can be cleared.
Who the Hell needs to know what happened in 1066 etc?