Can interactions happen at less than the Planck Time?

[bbbl67]

I was watching this PBS Spacetime video, and something they said bugged me. They said that some subatomic interactions are occurring at time scales less than the Planck Time. And thus, this would also mean that these things are happening at scales less than the Planck Length as well. My understanding had been until now that Planck Length and Time are the cut-off lengths for interactions. What should I believe?

Here's the video that I was watching, and the statement occurs at 6:36 of the video:

 

[phinds]

Plank time and Plank length are man-made specifications. Nature doesn't care.

 

[Nugatory]

My understanding had been until now that Planck Length and Time are the cut-off lengths for interactions.

That's a very common misunderstanding, so common that we even have an Insights article on the subject: https://www.physicsforums.com/insights/hand-wavy-discussion-planck-length/

 

[bbbl67]

That's a very common misunderstanding, so common that we even have an Insights article on the subject: https://www.physicsforums.com/insights/hand-wavy-discussion-planck-length/

So whether or not Planck Length maybe significant is only something that Loop Quantum Gravity considers legitimate?