A recent letter, headlined “Human nature shows the importance of walls,” mistakenly claims that constructing walls for protection is a “primal instinct” dating back two to three million years. On the contrary, while self-protection is a primal instinct, nomadic hunters and gatherers had no need for protective walls until they settled down after invention of agriculture some 12,000 years ago.

The letter also suggests incoming House Speaker Nancy Pelosi belongs in a circle of hell reserved for hypocrites because she lives in a walled mansion but opposes construction of a wall between the U.S. and Mexico. Mistaken again. Years ago Pelosi and her husband were incorrectly identified as purchasers of a $24 million walled home in San Francisco. They actually live in a fairly ordinary looking place in the same neighborhood.

Radar, cameras and ground sensors that set off sirens when breached, in coordination with helicopters, blimps and drones, are a cost effective alternative to constructing a 1,300 mile wall to thwart illegal immigration.

Dave Davis

St. Simons Island

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