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Brownian motion and rotational orientation

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EricL:
Should Brownian motion impact rotational orientation?

Numsgil:
No, because brownian motion can be seen as fluidic forces acting on the bot, and it's uncommon for fluidic forces to be unequal enough in the bots' small frame of reference (small enough that it's subject to brownian motion) to cause rotations.

EricL:
What if we made it << than the result of brownian motion on planer movement?  Fluid movement is somewhat tubulent even if you assume a small frame of reference.  In fact, all the more so if you do as thermal effects become more pronouced.  

The reason I mention this is that I think there should be something other than tie actions and voluntary rotation that can change a bot's orientation.  I have zerobots that evolve to shoot and maintain that orientation for unrelasiticly long periods.   Even if the effect is small, I'd like to see some randomness here.  I also think we should add rotational elements to collisions.

Jez:
Is it analagous to conditions that exist for v. little things living in a watery enviroment? Would it be equally applicable to the other enviroments DB has or would you only be applying it to fluid based ones?

If it has a biological equivalent then yes, happy to have it as a new force of randomness in sim. I don't remember microbes under microscope suffering same effect, nor brownian motion come to that..

EricL:
It would only be in effect if the user choose to have brownian motion in the sim and then the magnitude would be scaled in the same way and amount brownian motion is scaled today.  The only thing you would notice when you turned it on is that bots wouldn't stay oriented in exactly the same direction for very long, the way they do today.  Think of it as random turbulance in a tide pool or petri dish or a dog's tougue or whatever your mental model of the big blue screen is.  Either you want random mixing forces in which case I would argue you also want random turning forces, properly scaled or you don't.  If you don't you just turn it off, same as you would today...

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