My mom was an aesthetician and she went to beauty school back in the '60s. I just remember watching her do her makeup all the time. She always had her nails done makeup on - her face was ready to go when she went out. I loved it.
It is no good getting furious if you get stuck. What I do is keep thinking about the problem but work on something else. Sometimes it is years before I see the way forward. In the case of information loss and black holes it was 29 years.
