I suspect this idea has occurred to the people working on this and it is not as easy as you assume - that there are problems in execution (so to speak) of this

I suspect this idea has occurred to the people working on this and it is not as easy as you assume - that there are problems in execution (so to speak) of this shortcut. Once the lab-in-a-test-tube thing is solved, it is a much cleaner and more elegant solution.