# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/ujtviua
Sega 3-D Glasses: how did they work?**
Most people have two eyes, allowing for a stereoscopic view of reality. Nevertheless, video games are generally designed to run on monitors with a single screen, viewed from a distance, so three-dimensional effects have to be done with perspective and other techniques. But of course, many ways have been made to give a true stereoscopic view; from the 3DTV fad of the early 2010s, to the Nintendo 3DS’ glasses-free parallax barrier. But how did systems in the pri ... ⌘ Read more