https://rdoodles.rbind.io/2019/06/reanalyzing-data-from-human-gut-microbiota-from-autism-spectrum-disorder-promote-behavioral-symptoms-in-mice/ and https ...
Install, remove, configure R versions. You can use x86_64 rig on Arm macs, and it will be able to install Arm builds of R. But you cannot use Arm rig on Intel macs ...