How is it that you put man on the moon before you figured out it would be a good idea to put wheels on luggage?

Ideas happen when they happen. How is it that we put a man on the moon before we created post-it-notes? Even though this is not necessarily the reason, this supports the fact that wheels weren't placed on luggage before man made it to the moon: Back in the day, people did not travel as much, especially not as much by airplane. Weren't there also people back then that carried the luggage for people? Keep in mind that this was back in the day where people did not even pump their own gas. Human services most likely caused people to stray away from the idea of putting wheels onto luggage. But the main point I am trying to make, is that IDEAS DO NOT COME IN ORDER OF THE TECHNOLOGY WE HAVE, THEY COME WHEN PEOPLE THINK OF THEM AND WHEN THEY TAKE THE TIME AND EFFORT TO INVENT THEIR IDEA AND GET IT PATENTED. IF THEY DID, THEN WE WOULD HAVE HAD WHEELS ON OUR LUGGAGE AROUND THE TIME THAT PEOPLE FIRST STARTED TRAVELING A LOT.

• How do you give yourself a wedgie without ripping your pants?
• What would Chuck Norris do?
• What are those meaningful words which can be read both the way?