I occasionally wonder if it was only the Beatles who faced all those stupid questions from the media in those days, or if they were typical of the standard. Like, did Elizabeth Taylor or Frank Sinatra receive questions about what they thought about the arms race and African independence? Was it only the pop stars who got all the inane "What's your favourite colour?"-type questions?
If that's the case, then it's really no surprise that the reporters all focused on the hair in '64 - that would clearly be the most interesting thing they could possibly think of ...