It is one of the most difficult genres for writers to have success getting published and it requires far more work than the beginner would suspect. (hubpages.com)
I think one of the most difficult genres for women to be taken seriously in is sci - fi, especially hard sci - fi. (writerunboxed.com)
Although it is one of the more difficult genres of photography it's something I hope to improve on in the near future. (nomadicsamuel.com)