C(32, 3) is 4960. That means almost 5,000 different interference patterns to deal with. Since every manufactured device will vary (since each of its 32 manufact

C(32, 3) is 4960. That means almost 5,000 different interference patterns to deal with. Since every manufactured device will vary (since each of its 32 manufactured coils will differ slightly from the next), that's 5,000 calibrations that need to be done on every single manufactured device. And that's best case, assuming (for example) that calibration is a single metric per coil over time.