The best thing you and I can do at the end of the writing day is to stash our work gloves in our locker, hang our leather apron on a hook, and head for the workshop door. If we’ve truly put in our hours today, we know it. We have done enough. It won’t help to keep at it like a dog worrying a bone.~ Steven Pressfield from, https://stevenpressfield.com/2014/08/the-office-is-closed/
I’ve recently learned that “inertia” as a word, was first applied to the cosmos during a fairly recent philosophical shift in thinking. People like Copernicus were looking at the cosmos and used “inertia” to point out the universe’s inherent, not-alive property; as in, the cosmos possesses inertia, the property of being inert. Newton’s idea of inertia, in the sense that slow moving dump trucks have a lot of inertia, aligns with the idea that the inert cosmos resists. It resists starting and it resists stopping. Newton’s equation, “F=ma” is a result of inertia; If (F)orce is zero on the left, then (a)cceleration is zero on the right. If acceleration is zero, then velocity remains constant.
Aside: “velocity” is speed, “how fast?” and direction, together as one property. Turning a corner in a car, at the same speed, is a change in velocity. To do so requires force from the steering tires of the car. The steering wheel is simply a well designed control for applying lateral force to the front of your car to control your velocity without changing your speed.
Where was I? …oh, right! Inertia. The cosmos. Back to it…
The inert cosmos resists starting and stopping. But I am not inert! I long ago recognized that when I was not moving—figuratively speaking, moving by being engaged making progress toward some goal… When I was not moving, then I needed to do something to get moving. I needed to start, and realizing that I was bad at starting, I needed to practice starting. Okay, did that.
Unfortunately, I have created a new problem: I don’t know how to stop. It turns out one really needs to also be able to start and to stop. Now that I’ve mastered starting, I can finally begin to learn to stop.
<sarcasm>And surprise!</sarcasm> F=ma. Starting and stopping are equally difficult.