If you don’t know what happened a few minutes after this picture was taken in 1969, you are either way too young or have no knowledge of rock history. I’m serious.
Note that Paul is wearing flip-flops here; he obviously removed them before they made the iconic album cover.
You can see more outtakes of this famous shoot at Laughing Squid.
On the album cover they cross the street from left to right. It’s inconceivable to me now that they could have done it in the other direction, so engraved is that photo on my mind. But they did it that way in the outtakes!
Oh, and remember the last line of that awesome second side of Abbey Road; it’s the best line to ever appear in a Beatles’ song: “And in the end, the love you take is equal to the love you make.”