<p>I believe he may be referring to this paper: <a href="http://publications.csail.mit.edu/lcs/pubs/pdf/MIT-LCS-TR-205.pdf" rel="noreferrer">NAMING AND SYNCHRONIZATION IN A DECENTRALIZED COMPUTER SYSTEM</a>.</p>

CC BY-SA 4.0
2018-09-07T17:01:54.397Z
Link is broken.  This works for now:  https://dspace.mit.edu/handle/1721.1/16279
Austin Salonen
CC BY-SA 3.0
2015-04-10T20:11:12.700Z
2015-04-10T20:11:12.700Z
nosideeffects
<p>I'm currently listening to Alan Kays' talk "Is it really complex or did we just make it complicated ?" (<a href="https://www.youtube.com/watch?v=ubaX1Smg6pY&amp;=" rel="noreferrer">https://www.youtube.com/watch?v=ubaX1Smg6pY&amp;=</a> ) where he says that "semaphores were a bad idea and there was something called pseudo time that was superior" (at 51:40 on the linked video).
Maybe I misunderstood the word "pseudo time", but do you know anything about those ?</p>

<terminology><concurrency>
What's "pseudo time" when used in comparison with semaphores
molyss
# What's "pseudo time" when used in comparison with semaphores

(Asked by: username_0 on 2015-01-19)

I'm currently listening to Alan Kays' talk "Is it really complex or did we just make it complicated ?" (<https://www.youtube.com/watch?v=ubaX1Smg6pY&=> ) where he says that "semaphores were a bad idea and there was something called pseudo time that was superior" (at 51:40 on the linked video).
Maybe I misunderstood the word "pseudo time", but do you know anything about those ?

**Tags:** terminology, concurrency


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## 1 answers

### Answer by username_1 on 2015-04-10. Score: 8

I believe he may be referring to this paper: [NAMING AND SYNCHRONIZATION IN A DECENTRALIZED COMPUTER SYSTEM](http://publications.csail.mit.edu/lcs/pubs/pdf/MIT-LCS-TR-205.pdf).

> **Comments:**
> **username_2**: Link is broken.  This works for now:  https://dspace.mit.edu/handle/1721.1/16279  

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