Alternatives to physical distancing by space
Many remember the old class separating curtains used in planes. This could be moved from row to row depending on how many business class customers there was. A similar curtain on every row of seats would be a very good physcial barrier to stop droplets expelled with sneezes, or during conversations, traveling over several rows. An extension could be added down to the armrest between each seat in a row for complete cocooning and removing the need for leaving seats free. When you have taken your seat you sanitize your hands and your are safe even if you touch your face now ad then because your hands will then not touch anything touched by anyone else. Social distancing by walls works in first class so why not. And row separating curtains have been allowed for a long time as a movable class separation. A company has already made a sample: https://simpleflying.com/middle-seat-privacy-screens/ However they could be larger and on the armrest instead of taking a whole seat, to allow full oc...