Hardy industrialists is for suckers.
HI = 1000 points = +25% construction
Adding points to construction trait:
First +20% @ 25 points/% = 500 points
Then, the next 5% @ 100points/% = 500 more points
Total 1000 points, + 25% construction. However, adding that way affects planetary and space-based construction. HI only improves planetary.
I'm more of a propulsion experts fan (as you'll know from the game we've just met each other in Mr. Fyron
