I haven&#x27;t read the paper, but I assume the novelty here is the discovery of what happens when more than two of the hairs are triggered. The BBC Life series with David Attenborough talked about the counting&#x2F;triggering mechanism years ago: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=O7eQKSf0LmY" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=O7eQKSf0LmY</a>