[quote=@Isotope]
[@Flagg]That works too!

Either way I'm happy.  
[/quote]

I meant that the brains would be needed to create the bridge? I like the idea of essentially cog engines being individually made and impossible to mass-manufacture because any number of attempts to make them will fail due to limits in machine/brain learning.

EDIT: there could also be a very different types of cog engines that function differently. Pure machine ones, ones that use brains, ones that eat up magical handwavium, etc, each with their own pluses and minuses, but the basic premise of 'expensive machine that navigates hyperlanes' remains the same.