Doesn't mean a disease can't still hurt us.
Yes, a disease can hurt us, but even in the event of a severe disease it mostly means one village bites it.
I'm speaking out against the claims that building tall led to disease and that we should expand expand and expand to fix that.
101 of Civ Building: if there is living space and food, the population will expand to match. The fastest way to hit a big plague is to expand your settlements to create many efficiently growing incubators for disease until diseases which can remain latent or nonlethal long enough to transmit across a travel time of weeks to months appear.
The best way to make sure you have good disease resistance is good connectivity, because small diseases like minor fevers will exchange regularly between villages, effectively breeding a more robust immune system over time, and when a plague hits the ability for messengers to learn what had happened before the panicking people flee into your village is important.
Maybe farming would give us walls for rudimentary defenses against wild animals trampling the crops that then gets expanded to a city scale? My civ senses are tingling.
Walls are expensive to build with stone tools, so its never been considered to build them for anything but shelter. Yes, even fences.
Its hard for someone in the modern age to really picture it, but cutting down saplings and making the fibers to bind them together is a lot of work when your knife or axe breaks about once ever meter worth of low fencing(if using bone), is blunt and takes many many hits to actually cut, or takes a day's work to knap from expensive flint.
The main defense against animals eating your crops is a farmer with a spear, a fire and a good yelling voice.
