If there are many other insects that have the same type of vision as bees, then those insects' vision probably developed for the same reason as bees.
If perceiving colors is not important to those insects, then there must have been some other evolutionary reason for them to develop that way (a coincidence is unlikely because there are many different insects with this same type of vision).
If those insects' vision did not develop in response to object color, then we can conclude that bees' vision did not develop in response to object color either. A flower is an object.
Because bees' vision is well-suited to identifying flowers (CORRELATION), and bees' vision didn't develop in response to flower colors (INCORRECT CAUSATION MODEL), then flower colors must have developed in response to bees' vision (CORRECT CAUSATION MODEL).
Ryan Jacobs | Manhattan GMAT Instructor | San Francisco
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