The authors claim that visual clues about time and fatigue are essential to making virtual reality experiences more engaging.
It’s part of an ongoing effort to use time perception to make virtual reality more realistic and exciting.
“When the user is bored, they perceive it as passing slowly.”

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Often developers want to hide or freeze the passage of time in VR, Bryant said.
Kennedy pointed out that VR must let users keep track of the real world.
“The tremendous power of VR for altering our perceptions should not be underestimated,” he added.

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“Time could be represented spatially.
Kennedy pointed out that VR could eventually be used to explore deep time in simulations.
It’s hard for the human mind to fathom the scale of geological time.