Earlier quoted context omitted.
Honestly, one of the safest and most powerful tools is just to continually ask "why" questions as a result of whatever they say in regards to technical details, with a scattering of "how?" questions. Others in the comments have expressed some legal concerns about "discussions" instead of Interviews, but I feel this is a hyperbolized fear based off a laypersons interpretation of US hiring law. The law requires you ask…
> but I feel this is a hyperbolized fear based off a laypersons interpretation of US hiring law Making definitive statements about liability is not trivial. I can confirm that at some very large companies legal has banned this style of interview citing discrimination concerns. I'm not a lawyer, so I can't comment on whether they're call is more or less correct but it certainly doesn't seem settled.
Also working for a "large" US company and discussing with peers from others, no such banning exists. There is very clear training and a heavy restriction on who can perform interviews, but this is not the same as outright banning it.