Wire wrap is the most reliable form of construction, used by NASA for many years for this reason - the wrapping of the wire around the square pegs creates a sma

Wire wrap is the most reliable form of construction, used by NASA for many years for this reason - the wrapping of the wire around the square pegs creates a small cold weld at every corner. Plus when mulitlayer boards were not really a thing, wirewrap gives you all the layers you want, more or less.