In the US a PhD has many pantronizing requirements, but in the UK, where Fowler is, is much more mature, usually only requiring a thesis. But with the war and

In the US a PhD has many pantronizing requirements, but in the UK, where Fowler is, is much more mature, usually only requiring a thesis. But with the war and kids and life, Fowler may have felt there was no need to get a PhD since she didn't plan to return to work as a professional physicist. Degrees only matter if external pressure demands it.