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I work remote and my work has a pretty loose policy on webcams for meetings. If you don’t want it on, don’t turn it on. That said, when I am presenting or speaking, I like to have my webcam on. I personally find that the level of engagement is higher for speakers with their camera on, and so I try to extend that back to the people I am speaking to. I also find that the inclusion of visual cues helps with communications.
As for political spaces, my local congress person holds a regular townhall via telephone (not sure if she’ll keep this up if she wins the governorship this year) and I have never really felt the need to stare at her as she talks. I actually like the format as I can listen with my earbuds while doing something else. So, different situations can merit a different response.
Honestly, I think some folks make far more out of using or not using a webcam than it really merits. For those of us who are more introverted, having a camera on us can make us feel self-conscious. Though, I think using the word “trauma” to describe this is being overly bombastic. At the same time, I think there are some folks for whom the visual connection with a speaker or listener is also important and the lack visual of feedback from the other participants in the conversation makes the conversation more difficult. It’s just another of those areas where we are each going to need to make a decision based on the particular conversation and context. Interacting with other people is messy and is going to involve some level of discomfort from time to time.
At this scale, the stick isn’t as solid as your intuition would lead you to believe. Instead, you have to start thinking about the force at the atomic scale. The atoms in your hand have an outer shell of electrons which you use to impart a force to the electrons in the outer atoms of the stick on your end. That force needs to be transferred atom to atom inside the stick, much like a Newton’s Cradle. Importantly, this transfer is not instantaneous, each “bump” takes time to propagate down the stick and will do so slower than the speed of light in a vacuum. It’s basically a shockwave traveling down the length of the stick. The end result is that the light will get to the person on the other end before the sequence of sub-atomic bumps has the chance to get there.