Fact checking at parties

As the holiday season is coming to a close I have been thinking that most parties could use a fact checker. That is, a hired librarian or journalist who would circulate the party with a smart phone and verify the truth of what is said. I have to admit I have become somewhat skeptical about the facts that are presented in modern social situations and believe a professional fact checker could really do a service in circulating in a gathering and check the veracity of what is said.

Bill Grabonski announces that Windows 10 makes you buy a new printer!
The fact checker could tell Bill which existing printers do, in fact, work on Windows 10.
Janet Aldessio tells Rebecca Schwartzen that if she bottle feeds little Timmy, he will become allergic to peanut butter. The fact checker could give likely percentages according to the CDC.
Henry Gribaldi says that the Beatles were tough guys because they grew up Liverpool. The fact checker could tell him that actually three of the four went to fancy schmancy private high schools and it was Hamburg, not Liverpool where the boys learned about the seedier side of life.
Sid Blencher remarks that diesel engines always last longer than gas engines. The fact checker could swoop in on the conversation and verify his claim.

In addition to increasing the level of knowledge all around, a party fact checker would be a wonderful job for a retired librarian. To quote from Keith Richards, that's all I have.