#7xx

[your-dewey-decimal-number-is]

since today's the day, can you classify the indy 500? 👀

796.72 for motor racing, but specifically 796.7209772 for racing in indiana (re: the indy 500)

[your-dewey-decimal-number-is]

What is under 177.76 and 200.20?

177.76 is unassigned, but falls under 177.7 which is philanthropy

200.20 is religious miscellany

I think the spirit of the question can be found under 796.332 (american football) and 629.43 (unmanned spacecrafts/probes)

[your-dewey-decimal-number-is]

where do silent horror films go?

The fiction section. Dewey deals only in non-biographical non-fiction, though you can find books about the horror genre in 791.4331. The history of motion pictures is in 791.4309, and books about specific movies are all under 791.437.

[your-dewey-decimal-number-is]

So, I dont Totally get the ddns, I dont actually kno if a new number is born for everynew thing that happens ever; is there a number for labubus..?

745.592 and 795

toys and games of chance (re: gambling)

[your-dewey-decimal-number-is]

fidget/sensory toys? and is there a classification that would be given to a book on the period of time in which fidget spinners were a major fad?

There's no category for fidget toys specifically, but toys in general fall under 790.133, and books on fidget spinners have been placed there or 793.4 for "action games." The time period, mid-to-late 2010s, would be under 973.932 and 973.933 (though most of those are about political/governmental/civic history rather than social history/fads)

[your-dewey-decimal-number-is]

Programming socks (as seen in memes and on know your meme)

Most books about socks are in 794.432 for textile art/knitting or 646.42 for the construction of undergarments and hosiery. For this specific meme, I would suggest 306.768 (trans and non-binary people) by way of 005 (programming/coding)

[your-dewey-decimal-number-is]

Would a book about fictional geography go in the system or would that be in fiction?

Books about drawing maps for RPGs have been filed under 743.87 (how to draw fantasy) and 794.8 (video games). Geography itself is filed under the 910s, with 912.99 and 919.9 dedicated to extraterrestrial worlds, though those sections are more about the Moon and Mars and exoplanets rather then fictional worlds. Some books on fictional geography have been filed under 917 for travel guides or the 800s for literary analysis ("The Complete Guide to Middle-Earth" is under 823.912 for 20th century English lit). It would only go in the fiction section if it were a novel or a story about the fictional place.

[your-dewey-decimal-number-is]

I was always amused that tabletop roleplaying games were “indoor amusements”.

793.93

though I suppose there's nothing stopping you from playing them outdoors besides 551.51 (wind)