Nib asked for
Why Print Spread in Jumps
Printing did not creep outward from Mainz like a ripple; it leapt along trade routes to distant cities that already had merchants, universities, and skilled craftsmen.
5 steps, drawn by Nib. Read it here, or watch him draw it. Updated .
1the ripple guess
Picture dropping a pebble in a pond: the ripple reaches the nearest spot first, then the next, ring by ring. It is natural to assume printing spread the same way, moving from Mainz to the nearest towns and then outward. The real pattern looked very different, and the rest of this page explains why.
The ripple picture is the wrong picture for how print spread.
a common mix-upPrinting spread outward from Mainz to each neighboring town in turn, like a ripple.
2what a shop needs
A press, type, and paper were not enough on their own. A printer needed money up front, buyers who would pay for books, and a way to ship heavy bundles of paper and finished copies. Those conditions were found in busy trading cities, not in every town on the map. So the question changes from how far a place is from Mainz to whether it has what a print shop needs.
A print shop needed customers, capital, and transport, not just proximity to Mainz.
3the hubs
Early printing took hold in places like Venice, Paris, Cologne, and Basel. Venice was a major trading port where merchants had cash to invest and could ship books across the Mediterranean and beyond. Cologne, Paris, and Basel had universities full of students and teachers who needed texts. Skilled metalworkers and papermakers were available in such cities, which mattered because type had to be cast precisely.
Trade hubs and university towns were the natural homes for early presses.
4sparks, not a stain
Because these hubs were linked by trade routes, the knowledge of how to print moved along those routes too, carried by people. Printers traveled with their skills, and some German craftsmen set up shops in Italy within a few decades of Gutenberg's work. A shop in Venice could therefore appear before small towns that were much closer to Mainz. On a map, the spread looks like sparks landing at distant points rather than a spreading stain.
Skills travelled with people along trade routes, landing in far hubs first.
Why might a printer set up shop in Venice before a small village a day's ride from Mainz?
Show the answer
Venice had merchants with capital, many buyers, and shipping routes, while the village lacked the customers and money to support a shop.
5a network
Once a hub had a few presses, it began to supply the region around it, so new centers formed from there. The result was a network: major cities first, then smaller places connected to them. This is how a technology could reach many distant cities within a few decades. It also set up the next question, which is why books became so much cheaper once printers were competing in these hubs.
Hubs became new starting points, building a network rather than a single expanding ring.
Print traveled where money, readers, and skilled hands already gathered, so it jumped between cities fast, and that crowded competition is what drove prices down next.