In his article “Does new physics lurk inside living matter?” (Physics Today, August 2020, page 34), Paul Davies mentions many interesting phenomena in biology, including epigenetic influence in two-headed worms. I agree that such information might be important to both physics and biology.1 

As I finished reading, I realized the article is advocating quantum biology. Davies cites a claim made by researchers in 2015 “that many biologically important molecules, such as sucrose and vitamin D3, have unique electron-conductance properties associated with the critical transition point between an insulator and a disordered metal conductor.”

What I do not know is this: How could bulk material properties such as electron conductance be defined at the molecular level? In my opinion, geometry will be more important than material properties at that level.

1.
J. J.-L.
Ting
,
J. Appl. Phys.
125
,
155702
(
2019
).
2.
P.
Davies
,
Physics Today
73
(
8
),
34
(
2020
).