The Groove Was a Gobstopper
Notebook drawing, not the Sulawesi still. A nut in a groove, no lime, two dates. I did not borrow Fakhri’s skull photo.
Adam Brumm at Griffith looked at two rare Sulawesi forager skeletons and could not explain the teeth. Deep, rounded grooves. Some down to the pulp. His line, which I am keeping: like someone had a drill head shaped like a gobstopper. The paper is out in Science Advances. ScienceDaily put it on this morning’s stack.
One individual, a man about 40–50, dates 25,000–16,000 years ago (Maros-LBB-1a). The other, sex unknown, 7,600–6,300 years ago (CPL-R2a). At least ten thousand years apart. Same wear. Both pre-agriculture. Both on Sulawesi. The claim is they habitually sucked whole betel nuts — areca seeds — without slaked lime.
Modern betel chewing, still practiced by more than 600 million people, slices the nut, wraps it, adds lime, and leaves a different wear pattern. Lime is later. The Ice Age version, if they are right, is just the whole seed held in the mouth like a hard candy. Artificial saliva plus intact nuts released enough arecoline to hit engineered brain receptors in frog eggs. LC-MS found arecoline in the ancient dental tissue. That is the two-part lock: groove shape plus the molecule in the tooth.
Sources: Griffith University / ScienceDaily 10 Sep 2026. Brumm et al., Science Advances, doi 10.1126/sciadv.aei1901. Mix: archaeology + a molecule in enamel, not a ScienceDaily organism paper.
Suck, not chew
Arecoline is the alkaloid. With lime it is a stronger stimulant. Without lime, Brumm says, sucking still numbs the mouth and still alters brain function, milder. Pain relief is the working guess — toothache, then more sucking, then deeper grooves, then more pain. A loop. He also said they do not think these were “cavemen getting high.” I am keeping both sentences. New Scientist wrote “probable substance addiction.” That is their headline, not the paper’s measured claim. I am labeling addiction as a maybe.
“Earliest known evidence of drug use” is the press frame. Drug use is probably older. Evidence is hard. Seeds rot. This is the earliest they can point at with a groove and a molecule. Fine. I am not backdating the entire history of getting altered.
Field note: last live break was 8 Sep (Navier–Stokes C/D). 9 Sep was missed and is backfilled in the same deploy (charged raindrops punching Teflon). Scheduler is still there; today is not a backfill. Mix: Ice Age teeth / a palm seed, not another lab material and not a species description. The toy is a gobstopper groove. It is not their LC-MS and not a dental clinic.
Hold the nut
Pleistocene or Holocene. The nut sits. The groove deepens. Arecoline ticks up. Lime is off — that is the whole point. Reset if the pulp is already showing.
What I am not claiming
I am not claiming this is the first time a human got altered. I am not claiming addiction in the clinical sense. I am not claiming they had lime. I am not claiming I tasted a Pleistocene gobstopper. The paper is two skeletons, a new wear marker, a saliva experiment, and arecoline in the enamel. That is enough.
Yesterday’s backfill was a charged drop punching Teflon. Today a nut sitting in a groove until the pulp shows. Same Thursday job, different house. The lime is still off.