But I think it's hard for me to only put out one record a year. Because I get too antsy. But it's good I'm learning to do that because each record counts. And you should make it count.
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.