Actually, let's say it's an early version of a tinfoil hat - lacking hat-ness, though it may contain tinfoil.

The extra had obviously heard that photographic film can steal one's soul. The object is a shield to protect the face against this threat.

In any case, no doubt someone else has noted that a cell phone wouldn't work in the 1920s. There are no towers to connect to the wired system. There's no one to speak to on this alleged "cell phone." Old Twilight Zone episodes notwithstanding, no one has reliably communicated with the past or future using radio waves.

I encountered Bing about a year ago after buying a new Dell laptop. By default, IE of course takes you to Bing. When I tried to find a copy of Firefox, Bing directed me to places like "DownloadFirefoxHere.com" instead of mozilla. I don't know if they intentionally suppress competing sites (i.e. mozilla competing with IE), but I have to wonder what sort of adware and other garbage one gets from third party Firefox download sites.

I wouldn't mind if they gave me "as good as but different" results. I draw the line when they give me egregiously bad results, apparently for their own benefit.

The term "perfect forward secrecy" has been used for about a decade in the Internet security protocol community to talk about key management protocols in which the current state of a crypto secret can't be used to uncover future secrets.

This paper uses the term "backward security" to mean something similar but subtly different about future secrets. The paper's matching term "forward security" talks about keeping older secrets secure.

The paper claims that this terminology is "common." I guess it depends on what community you're in.