Blog — Dr. Johannes Falk - Theoretical Physicist https://johannes-falk.de/blog/ https://johannes-falk.de/blog/index.xml Hugo -- gohugo.io en mail@johannes-falk.de (Dr. Johannes Falk) mail@johannes-falk.de (Dr. Johannes Falk) Tue, 30 Jun 2026 11:13:25 +0200 From Subjectivity to Polycontextural Logic https://johannes-falk.de/blog/from-subjectivity-to-polycontextural-logic/ Fri, 10 Apr 2026 00:00:00 +0000 https://johannes-falk.de/blog/from-subjectivity-to-polycontextural-logic/ Subjectivity means different observers reach different yet valid conclusions. Gotthard Günther’s polycontextural logic turns that into a formal account of self-reflection, and shows why today’s mono-contextural AI cannot manage it. Two network models of consensus and graph colouring make the idea concrete. Reading the Money Flow: Winning the Bremen Big Data Challenge 2025 Without a Black Box https://johannes-falk.de/blog/bremen-big-data-challenge-2025/ Mon, 21 Jul 2025 00:00:00 +0000 https://johannes-falk.de/blog/bremen-big-data-challenge-2025/ Winning the 2025 Bremen Big Data Challenge anti-money-laundering track with an F1 of 0.9992, by reading network structure instead of training a black-box model. Two Observers, Two Truths: Why Physics Runs on Transformations https://johannes-falk.de/blog/physics-and-transformations/ Sat, 10 Sep 2022 00:00:00 +0000 https://johannes-falk.de/blog/physics-and-transformations/ Two observers measure the same experiment and get contradictory results — both correct. Gotthard Günther's polycontextural logic explains why physics needs transformations. When the Environment Remembers: Memory Effects in Synthetic Biology https://johannes-falk.de/blog/when-the-environment-remembers/ Thu, 09 Jan 2020 00:00:00 +0000 https://johannes-falk.de/blog/when-the-environment-remembers/ Why a genetic module behaves differently inside a cell: the environment has a memory. We compute that memory kernel exactly by mapping reaction chains onto random walks. Burst Noise Can Create and Destroy Bistability in Chemical Systems https://johannes-falk.de/blog/minimal_model_burst/ Sun, 01 Oct 2017 00:00:00 +0000 https://johannes-falk.de/blog/minimal_model_burst/ Burst noise can create or destroy bistability in a one-dimensional chemical system without changing its deterministic equations. How the Drive Shapes Self-Organized Criticality — and When It Doesn't https://johannes-falk.de/blog/how-the-drive-shapes-soc/ Mon, 15 Feb 2016 00:00:00 +0000 https://johannes-falk.de/blog/how-the-drive-shapes-soc/ Changing where grains enter an Abelian Sandpile can preserve criticality (α ≈ 1.021) or destroy it via a percolation transition at p_c ≈ 0.58.