Technology Question

Hi All,

Can Someone explain me meaning of technology Cool down (builders) in compare to upgrade speed (watchtowers)

Where is the difference here??  I mean what is it cool down time to workers? Did not see any cool down . Building of next tower can be started immediately after one is finished. So where is cool down here?  Thanks for answers in Advance.

Maybe it’s the travel time builders need to get to a watchtower under construction. So building a tower is somewhat faster, when the tower is further away from stronghold.

Upgrade speed of a tower is time required to build tower of a certain level. That you speed up by that other research.