In the '90s, I read a book that about a world where things improve when being used.
In the book, people on Earth have some kind of device that remotely scans the universe, looking for worlds/civilizations. They find one and send a one-man mission there through some kind of teleporter. The man gets stranded in the world.
When exploring the world, he finds a human, medieval-looking civilization. The people seemingly have some remarkable technology. On the other hand, he finds the people lack any technological skills or knowledge. Over the time he realizes that they did not build the technology. On this world, things improve when being used. So the people start with stone age-grade tools, and by intensively using them, the tools improve. Conversely, when the tools are abandoned, they degrade over time. For example the people start with an axe from stick and piece of stone. Or they make window glass by taking a piece of quartz and staring at it long enough for it to become a transparent glass sheet. Some common people make stuff this way for living for rich people/aristocracy.
I believe at the end of the book, the explorer realizes that this mechanism of the world is somehow related to the kind of birds that live there. Also he realizes that he is not only on a distant planet, but also in the future. The planet was inhabited by explorers/refugees from Earth who wanted to live a different and isolated way (possibly without technology, but I've forgotten the details). They struggled to survive, so the rest of the humanity helped them by sending genetically engineered birds that changed the world mechanics as described.
Can anyone identify the book from this description? Thanks.