VM is right about the clock...it can be a hazard in many ways particularly in crop times, I think the downsides outweigh the upsides....

I think the safest option to increase tech points is the "kick" trait the VV's have....when you have as many as possible on the research table, watch out for the little kick movement, when they do that they have added tech points...so keep picking them up after they kick to help increase your tech points faster.

It is time consuming, and patience is required, but if you are in a bind it does help.

Best of Irish,
Maura