Of course we all know that the real answer is to develop a civilization over hundreds of year until we have pavement and HBO. Nevertheless I checked the Bradford Angier book of the same name out of the Higashi Osaka library (highly recommended) a few weeks ago. It is one of the most oddly written books I have ever come across.
"Both slingshots and bows and arrows are so familiar that, inasmuch as we will be limited in any event by the materials at hand, there will be no need to do more probably than to suggest them as survival weapons."
"We have boiled the noonday kettle, you and I, and now it is the halfway time when we should head back to camp."
This book, originally published in 1956 as "Living of the Land" also features a chapter entitled "What About Frogs?" Indeed.