Lyme disease is believed to come from Plum Island, and island off the coast of Connecticut, close to Lyme, CT. It is an island where to this day there is a government facility which was experimenting with biologicals and other forms of warfare. Ticks were the chosen means of transmitting what is now called Lyme disease; and it is an 'experiment' gone wrong, which cannot be put back in the bottle.
Re: Rachael Carson's Silent Spring being junk science; spoken like a no nothing moron. It's junk if it doesn't fit you personal agenda and belief system. No, science is based on facts, not wishful thinking or creationism and other devoid of facts nonsense.
DDT and Lyme, two completely different, absolutely no connection threats to humankind from our own labs. Deer are merely the transport vehicle for the infected ticks.
Junk science is what the OP dreamed up regarding his friend and DDT and Lyme. Get a grip.