I always had issues with the theory that dwelling on a "sin" would lead to one actually following through and doing the deed.... I have observed in my existence on planet earth that a greater number of what are construed as sinful acts are impulsive.....kind of out of the blue mistakes people make. Sociopaths may dwell on the evils they plan to commit....but that group is not representative of the average flawed human.
At best it is indeed a conundrum....and trying to make sense out of a spirit creature disguised as a reptile playing mind games with a pure innocent newly created human and her subsequent curiosity....well....good luck with that. And then endeavoring to explain it from God's perspective??? Given the JW view of God it becomes the utmost presumption to try to explain his thought processes.