Some hollows, cracks and lines interpreted in the past as carvings have been revealed as natural features, but what astonished Susan Greaney, an English Heritage historian and expert on Stonehenge, is the extent of surviving tool marks.
His professional dedication - or chops, as a surviving tool as I put it one night to myself - is impressive, and also quite humbling and inspiring.
"It is an experiment I asked for because I knew I had one more chance to survive," Mr. Tools said.
For those who survive, many tools help them deal with stress: yoga classes and foosball tables, a rotating assortment of free snacks as well as full-scale lunches twice a month.
Like: we cannot survive the tools we have built ourselves!
"It makes us an effective tool for surviving in a market where customer acquisition cost keeps getting more expensive," co-founder and CEO Liad Agmon said in an interview.
Paul Donohoe, press manager at the International Rescue Committee, said the mobile phone has also become a "fundamental" tool in surviving the harrowing water-crossing from Turkey to Greece, which has claimed almost 3,000 lives in 2015 alone, according to the U.N. Human Rights Council.
But, in rare moments of calm detachment, I can see how social media and the Internet and smartphones might be useful tools for surviving adolescence, in that they offer a ready escape from the too immediate present.
For now, I'll leave you with the two most important tools for surviving that inevitable call: a decent speakerphone, and the phone bank at GetHuman.
When you're choosing those few tabs, fields, and functions that should survive in your tool, choose the ones that will focus your sellers on the things that really matter.
A shot of the world's oldest surviving pencil (it is a tool that tends to get used up before anyone thinks to put it in a museum) and one of the graphite mine in Borrowdale brought us, via Nuremberg, to New York, where John Eberhard Faber, a fourth-generation German pencil-maker, opened a stationery store in 1850.
