Joining the live talk. Those we wish to be part of the Zoom meeting (and hence be visible, and be able to ask questions through the teleconference) are able to join with a computer, or mobile device such as a smartphone or tablet. A camera and/or microphone are needed if you want to be seen and heard, respectively. Due to security reasons, we ask parties to ask for a "seat" on the "seat reservation" page as early as possible, and will send the Zoom meeting instructions by email prior to the talk. Attendance is free, but a Zoom account (free) is required to join the call. More detailed instructions for those joining the calls appears below.