  Creating an artifact in front of public offers an opportunity to involve
spectators in the creation process. For example, in a live music concert,
audience members can clap, stomp and sing with the musicians to be part of the
music piece. Live creation can facilitate collaboration with the spectators.
The questions I set out to answer are what does it mean to have liveness in
interactive systems to support large-scale hybrid events that involve audience
participation. The notion of liveness is subtle in human-computer interaction.
In this paper, I revisit the notion of liveness and provide definitions of both
live and liveness from the perspective of designing interactive systems. In
addition, I discuss why liveness matters in facilitating hybrid events and
suggest future research works
