Apple has extensive indoor private test facilities. Like strip malls, but each shop is a testing ground. Imagine being paid to go hang out at the mall all day

Apple has extensive indoor private test facilities. Like strip malls, but each shop is a testing ground. Imagine being paid to go hang out at the mall all day. Yea you’ll sign an NDA for that. In addition to the NDAs, Apple tracks employee data very closely (e.g. iCloud) to mitigate leaks. The major downside to this approach is the sample size cannot be “internet scale” and it will be biased towards what Apple thinks it knows. That’s why things like Apple Maps and Siri had such poor roll-outs.