到目前為止，我們的大部分虛擬現實體驗都可以用幾分鐘來衡量——這裡是一個短片，那裡是一個技術演示——但這並不是因為技術限制或健康問題。據Oculus創始人帕爾默·勒基（Palmer Luckey）說，你在虛擬世界裡花費的時間可能比你想象的要多，因為真的，當你的頭被困在元宇宙中時，你怎麼知道時間在物理層的流逝呢？

本週，Luckey和*** Games執行長Hilmar Veigar在GDC的一個簡短遊戲《Oculus釋出前夜：Valkyrie》結束後，與一些記者交談，討論了是否有任何技術或遊戲設計方面的問題，比如人們應該戴耳機多久。簡單的答案是什麼？一點也不擔心。維格指出，他看到玩家在使用第二代裂谷開發工具包時，連續12個多小時玩早期版本的EVE:Valkyrie——“然後在第二天再次登入。”

這是一個公認的極端的例子，但這兩個例子都用來緩解人們對長時間使用虛擬現實的擔憂。那時候事情變得更加存在主義。全文評論如下：；為清晰起見，對其進行了編輯和壓縮：

Hilmar Veigar: We've already seen players in our alpha [build] with the [Oculus Rift] DK2 spend over 12 hours in one session, and then log in again the day after. So yeah, it doesn't really seem to be a factor... Of course [with EVE: Valkyrie], we wanted to do something that's kind of quick to get into, super [frenetic] and opposite from EVE Online, which has a slower pace and sort of takes decades.

Palmer Luckey: And on the hardware side, there's no fundamental limitation. It's gonna vary by person, but generally speaking, you should be able to use [an Oculus Rift] for long periods of time without any issues. Most of the time that I've put people in for long periods, they don't stop playing because of any problem with the headset. They stopped playing because they needed to go do something in the real world. Twelve hours is great. I haven't been able to do that since... I didn't have a job. Most people aren't going to be doing that.

Veigar: There's also an additional factor I've noticed when I'm playing myself is that time passes differently. You think you've played for 15 minutes and then you go out and it's like, "wait, I spent an hour in there?" There's a concept of, I don't know, VR time.

Luckey: I think a lot of times we rely on our environments to gain perceptual cues around how much time is passing. It's not just a purely internal thing. So when you're in a different virtual world that lacks those cues, it can be pretty tough... You all have been able to be outside and sense what time it is. And you don't know exactly how you're figuring, but you've lived your whole life knowing roughly where the sun is [and] roughly what happens as the day passes. People have a pretty good intuitive sense of, "Oh, I think it's around two o'clock." And they're usually relatively close. In VR, obviously, if you don't have all those cues — because you have the cues of the virtual world [instead] — then you're not going to be able to make those estimates nearly as accurately.