I am the viper

I vant to vipe your vindows

Those ancient stone arch bridges are remarkably durable, and can survive with very little maintenance. Many large stone bridges and aqueducts were built with no mortar whatsoever, and everything held together strictly through gravity. That requires quite a bit of skill with the stone cutting, though, in order for the weight to be distributed properly. And it makes them extremely costly and time-consuming to build. Wikipedia says the bridge pictured here took 30+ years to build, and that’s after the original bridge built here collapsed a few years after being built.

That was baa-d advice.

Did you pay for that advice? If you did, you got fleeced.