Most of the things I use are a few years old but nothing crazy old. Some t-shirts are maybe 10-15 years old in some cases, I guess that’s old for some. I have a lot of hand tools that are maybe 50-100 years old but they get less use.
(a) Conventional spatial reflections: A person sees their face when they look into a mirror, or when they speak the echo comes back in the same order. (b) Time reflections: The person sees their back when they look into a mirror, and they see themselves in different colors. They hear their echoes in a reversed order, similar to a rewound tape. (c) Illustration of the experimental platform used to realize time reflections. A control signal (in green) is used to uniformly activate a set of switches distributed along a metal stripline. Upon closing/opening the switches, the electromagnetic impedance of this tailored metamaterial is abruptly decreased/increased, causing a broadband forward-propagating signal (in blue) to be partially time-reflected, (in red) with all its frequencies converted. (Adapted from Nature Physics)
So kinda like running a sound wave through a flip/reverse filter in audacity and having it switch along the “time” axis.
The Argie fan behaviour was called by a few who had already seen how they behaved with Augustin Canapinos. Kinda text book for that small vile minority, but at the same time how much of it has any weight? Something the drivers should never have to deal with either way.
I use one daily to paste the date into meeting notes in Capacities and to name files, super handy.