Let's look at Research Lab 2 it lists research speed at 4.0 / 60
4/60 of what? There are no research times listed in the descriptions of the research.
It would be nice to know how long an item is going to take to be researched based on how many labs one has built. So like Pipes 2 would list say research required 320. You could easily see that it would take you ( 320 รท 16 ( 4 per lab x 4 ) = 20 min to research with 4 labs. This is just an example I have no idea of the exact research times.
