I had the joy of discussing evolution with two JWs last year. They did not know who I was. I took the angle of defending evolution.
One of the JWs said to me "there is no proof that one animal evolved into another animal. If apes evolved into humans then how come we still have apes?"
I laughed to myself as I replied: "There is proof and it involves monkeys. One generation of primates, or monkeys, overlapped another generation of primates, or monkeys. Even though they overlap it is still the one evolutionary generation, the one species, an overlapping generation ... [pause] ... of monkeys. It was about 50 years ago that evolutionists developed the overlapping generation ... [pause] ... of monkeys to primates to mankind to help explain to religionists who could not grasp the truth about the truth. Since that time the overlapping generation has been used by countless numbers of individuals in an attempt to irrationally explain their teachings when logic and records simply don't exist or work. Surely you've heard of the application of the overlapping generation and how it applies to monkeys? One monkeys life overlaps with another monkeys life but they are still the same monkeys. They're an overlapping generation. You must be familiar with the overlapping generation ... [long uncomfortable pause] ... of the monkeys to mankind illustration?"
The look they gave each other was priceless. I had to control every nerve in my body to prevent myself from breaking down in laughter.
The overlapping generation