Discover and read the best of Twitter Threads about #nonlinear

Most recents (3)

"You don't see radio changing gradually and suddenly become radar. #Darwin's theory doesn't work for #technology, and we have to make a new observation."

- W Brian Arthur at SFI today

#evolution #innovation #invention
"Novel technologies are constructed from existing technologies. These offer themselves as components for the construction of further technologies."

- W Brian Arthur at SFI today

#evolution #innovation #invention #technology #engineering #design
Unlike the two-parent #inheritance typical to (but not ubiquitous among) #complex organisms, #technology inherits features from n parents - a "vast ancestral #network" more like horizontal gene transfer networks in #bacteria.

W Brian Arthur on sumulating #invention on a chip:
Read 18 tweets
Hello #dendrites friends! Check out our new paper, published at @NatureComms : "Challenging the point neuron dogma: FS basket cells as 2-stage neural networks. nature.com/articles/s4146…
Briefly, we predicted through #computational simulations that the #dendrites of #Fast_spiking #interneurons in #Hippocampal #CA3 and #PFC areas come in two #nonlinear flavors: Supralinear and sublinear!
This bimodal nonlinear behavior is determined by differences in the morphology (volume) of the dendritc branches. These differences can causally enable or prohibit the existence of #sodium_spikes. Interestingly, both types coexist in all model neurons tested!
Read 8 tweets
"If I were to write a textbook on #complexity, it would be structured like this..."
- SFI Pres David Krakauer starts off this morning at #CSSS19 #CSSS at @IAIASantaFe

#error #adaptation #universality #coarsegrained #math #theory
"If you talk about #intelligence and #stupidity, you talk about #communication and #policy. That is the natural place to start."

"If you've ever written a Lokta-Volterra #equation, you've drawn a perpetual motion machine. There's no #dissipation."

- SFI President David Krakauer
"Why #God is a bad #theory: it's not because it's not true; it's because it uses an infinite-dimensional process to explain low-dimensional phenomena."

- SFI President David Krakauer at #CSSS19 on #Ockham's Razor & why #Darwin's animal breeding metaphor backfired on #evolution
Read 7 tweets

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