"It does not seem, however, that organic chemists were much worried about barriers to rotation in organic molecules in general at that time because there was no technique available to demonstrate the phenomenon experimentally"

This quote by Derek Harold Richard Barton is describing the lack of understanding and understanding of the idea of barriers to rotation in natural molecules at the time. Organic chemists were not worried about this phenomenon because there was no other way to prove it experimentally. This absence of knowledge meant that natural chemists were not able to precisely predict the behavior of particles and their reactions. This quote highlights the value of experimentation in the field of organic chemistry, as it is just through experimentation that we can acquire a better understanding of the behavior of particles. Without experimentation, organic chemists would be unable to make precise forecasts and progress in the field would be restricted.