These biological computers are intrinsically based on vibrations. The vibrations aren't just a source of diffusion and Brownian motion; they cohere into meaningful harmonic structures. Alan Turing described morphogenesis in terms of inhibition and excitation loops, which gives rise to banding patterns due to oscilatory harmonics and resonances [1]. We are so accustomed to thinking about things in terms of discrete, separable parts, we have a hard time imagining emergent temporal structures. Living organisms, from cells to brains to cities, are composed of interacting waves and harmonic structures. (I'm emphasizing a hippie-style "resonance and harmony" language here because it really is so critical for understanding these systems.
[1] Yang, L., Dolnik, M., Zhabotinsky, A. M., & Epstein, I. R. (2002). Spatial resonances and superposition patterns in a reaction-diffusion model with interacting Turing modes. Physical review letters, 88(20), 208303.
[1] Yang, L., Dolnik, M., Zhabotinsky, A. M., & Epstein, I. R. (2002). Spatial resonances and superposition patterns in a reaction-diffusion model with interacting Turing modes. Physical review letters, 88(20), 208303.