They're not very well understood.
The manufacturing of aluminum airplanes is very well understood".
The number theory of elliptic curves is very well understood.
"Miscarriages and infertility are extremely common but not very well understood," Niakan said.
"It's an awful, awful thing and the cause of it is not very well understood".
"The material system is not very well understood," says Ted Mihopoulos, who heads the department.
McWilliams, as Whitaker and Baxter must have very well understood, had played by different rules from theirs.
The interactions of gut bugs and novel chemicals, including pharmaceuticals, is probably very important but not very well understood.
It's unthinkable that we walk into such a situation with our eyes open, and yet, the science is very well understood.
"These things are not very well understood," said Mike Ordner, an assistant director for seafood safety at the Texas Department of Health.
But the risks of radiation releases during and after wildfires at contaminated nuclear sites are still not very well understood by scientists, let alone the public.
