The discombobulated ants at the center of the “ant mill” in the tweet below remind me of the phase-randomized core of a “spiral chimera” (as discussed here: https://t.co/vwzjdoVpme). In both cases, coherent rotating spiral arms surround an incoherent core. https://t.co/LgvLQjlLd6pic.twitter.com/0ihKeYgz06