Why did scientists believe the personal computer would improve a persons ability to work efficiently?

I think the scientists reasoning for the efficiency of the personal computer would be that all the resources needed would be on the computer for the person and there wouldn't be trouble having to find an article or a book if you have to site something you're writing for a paper. I feel that the computer is just one big inconvenience because there is so much that it has to offer. There's internet, instant messaging, music and so forth. These are just a few of the distractions that come packaged inside a personal computer. In the 50's and 60's, students and most professionals used typewriters and had to check out books from the library for papers and had physical documents in a file cabinet right next to their desk. I think this allowed room for less distraction because students and professionals weren't able to go on the internet or go IM their latest crush of the week. I feel that the advancement of the personal computer has just made it easier for someone to work less efficiently and have more distractions.