So, I was curious when assembly lines would take over emotion cores (since assembly lines increase production), and I wrote a calculator for it...
http://repl.it/azrThe breakdown is as follows:
An assembly line adds 48 RP/day when used. An emotion core on a 17xMR research planet produces 696 RP/day. All else equal, an assembly line will overtake the total RP production of the emotion core in 27 days (if the emotion core is on a 17x research planet).
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DISCLAIMER: Obviously, 17xMR research planets are not necessarily the best option for utilizing the far more important +1 Artifact on an emotion core, but it was a simple example.
Any suggestions or corrections (if I calculated something incorrectly)?