It seems that (1) in practice, so far they apparently don’t, but (2) no one is quite sure whether they should. (Or, rather, a few people are sure they shouldn’t, a few more are sure they should, and lots of people aren’t sure.)
It seems that (1) in practice, so far they apparently don’t, but (2) no one is quite sure whether they should. (Or, rather, a few people are sure they shouldn’t, a few more are sure they should, and lots of people aren’t sure.)