Centrism and extremism

I’ve written on my understanding of centrism here and here. The essence of centrism is an acceptance of a limit for everything. This means there are limits in all directions. The image of this is a closed convex curve with a center in the middle of the region enclosed. Without limits, there is no center. […]

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Anisotropy and reality

This follows posts on synchrony conventions such as here. Astronomers say things like this: “it takes sunlight an average of 8 minutes and 20 seconds to travel from the Sun to the Earth.” The statement above assumes the Einstein convention that the one-way speed of light is isotropic and so equal to one-half of the

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Numbers large and small

Consider this example, from Funding Science in America by James D. Savage (Cambridge University Press, 2000), p. 165: Since receiving their first $1 million or more in earmarks, seven institutions increased their rank by eight or more places…. When we talk of increasing a number, we usually mean making it larger, but in some cases

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Distance domain dynamics

Two key expressions for time domain dynamics are the momentum and the kinetic energy. Here we derive the corresponding distance domain expressions, which are called the levamentum and the kinetic lethargy. The momentum and kinetic energy are the force through time or space: momentum = mv = F Δt, an kinetic energy = mv²/2 =

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Four rates of motion

The speed of a motion is its length of travel per unit of duration. Symbolically, speed is Δr/Δt. Pace is its duration per unit of length. Symbolically, pace is Δt/Δr. In both of these ratios, the denominator is chosen independently of the numerator. That is, the denominator is selected first, and then the numerator is

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No motion as zero speed or pace

What does “no motion” mean for the measurement of speed or pace? There are two cases of no motion: either (1) the trajectory length is zero or (2) the trajectory duration is zero. Consider first the speed ratio (Δr/Δt). (1) the trajectory length is zero: then the speed is zero because it equals zero length

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Simple motion for space and time

This post continues the discussion here and here. Simple motion is “a motion in a straight line, circle or circular arc, or helix”. Since a helix and all other motions are a combination of linear and circular motions, simple motion may be considered as linear or circular motion. There are two basic measures of simple

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Textual realism and anti-realism

Anti-realists always begin with reality – and reject it. Because, they argue, it is obscure, misleading, and subject to different interpretations. So anti-realists begin again, this time with an idea of theirs. Even materialists begin with an idea, the idea of materiality. Thus anti-realists substitute their ideas for reality. In contrast, realists begin with reality

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