David Campbell wrote, "Identifying which cones are hazardous has a couple of
major problems, in addition to the fact that direct experiments are
unethical."

Hmm. Direct experimentation hadn't occurred to me before, but now you've
filled my mind with thoughts of the people I would volunteer as guinea pigs.
Their faces terrified, or perhaps merely resigned or even quizzical, as the
cone -- fatal, allergenic, or harmless? -- approaches them in their
water-filled cages. Yes. Thank you, David.

Andy

Andrew K. Rindsberg
Geological Survey of Alabama