General: Things that used to exist that younger people have never encountered

[DeepInlet]

Triggered by a conversation where someone under 25 had never used a phone book and did not understand what it was for. Then realised there are dozens of things that were completely normal infrastructure 15-20 years ago that have just disappeared. Not looking for nostalgia, more interested in the genuinely functional things that have been replaced and whether the replacements are always better

[Fan]

Phone books are the obvious one but the Yellow Pages as a business directory was genuinely useful. You could find local tradespeople without depending on a platform that takes 30% and pushes fake reviews to the top

[BiscuitTin]

Film developing and the experience of not knowing how your photos came out until a week later. The physical constraint forced a different relationship with image making that I do not think was worse

[Emma29]

Travel agents as physical shops where a person helped you plan a holiday. Not just booking flights but actually knowing which resort, which hotel, which time of year. That expertise lived in people not in algorithms

[Quarry18]

Video rental shops as a social space. The act of browsing, discussing, getting recommendations from someone behind the counter who had actually watched everything. Discovery is worse now even if access is better

[BretHart_X]

Encyclopaedia Britannica as the authoritative reference for anything. The limitations were real but so was the editorial rigour. Wikipedia is broader and faster and sometimes wrong in ways that matter

[Storm]

Radio with a DJ who played records and talked between them rather than an algorithm playlist. The serendipity of hearing something you did not choose is genuinely harder to replicate now