I too would like to echo the previous comments. The title of this article is sexist and insulting, and the assertion that "if your grandmother told you she was interested, it is just because she enjoys talking with you. You can be sure she did not remember a word of your talk!" is even worse. And the Einstein quotation is probably a misattribution.

There are many ways to express the sentiment of this article without being sexist, and I hope the authors and editors keep that in mind the next time they consider using grandmothers as the default metaphor for people who don't know much about science.