The One-Electron Universe

I received a telephone call one day at the graduate college at Princeton from Professor Wheeler, in which he said, "Feynman, I know why all electrons have the same charge and the same mass" "Why?" "Because, they are all the same electron!" And, then he explained on the telephone, "suppose that the world lines which we were ordinarily considering before in time and space - instead of only going up in time were a tremendous knot, and then, when we cut through the knot, by the pl...

 Thoughts on a Collapsing Wall

One summer day, while I was walking along the country road on the farm where I was born, a section of the stone wall opposite me, and not more than three or four yards distant, suddenly fell down. Amid the general stillness and immobility about me the effect was quite startling. ... It was the sudden summing up of half a century or more of atomic changes in the material of the wall. A grain or two of sand yielded to the pressure of long years, and gravity did the rest.

 Fathers Underepresented in Children's Stories

The very first article I ever had published appeared in Newsweek and was called "Not All Men Are Sly Foxes." It was all about what I perceived to be the negative stereotyping of fathers in children's literature. I spent an entire day in the children's section of my local library talking to the librarians and reading children's books, and found that dads were almost completely absent. In the vast majority of children's books, a mom is the only parent, while the dad—if he appears at all—was...

 The Importance of Web Topology

Web topology contains more complexity than simple linear chains. In this section, we will discuss attempts to measure the global structure of the Web, and how individual webpages fit into that context. Are there interesting representations that define or suggest important properties? For example, might it be possible to map knowledge on theWeb? Such a map might allow the possibility of understanding online communities, or to engage in 'plume tracing' - following a meme, or idea, or rumour, or...

 Cut-And-Paste Before Computers

The method is simple. Here is one way to do it. Take a page. Like this page. Now cut down the middle and cross the middle. You have four sections: 1 2 3 4... one two three four. Now rearrange the sections placing section four with section one and section two with section three. And you have a new page. Sometimes it says much the same thing, Sometimes something quite different--cutting up political speeches is an interesting exercise--in any case you will find that it says something and someth...