I found it:
Apparently this is from the book Build a Better Life by Stealing Office Supplies: Dogbert's Big Book of Business - many thanks to @Carmeister for knowing this!
How I found it: a Google image search for comic strip unix "clothes say" about you (note the quotes) led me to this page. Having found the image, I tried searching for an exact quote but ...
This sounds like it might be Factoring Humanity (1998) by Robert J. Sawyer. (Admittedly it's more like 20 years old than 30.)
The aliens (from Alpha Centauri) first send a message, then a ship. (The decoded message contains instructions for building a device that allows people to visit and explore what is essentially the collective unconscious of humanity....
Laporte must refer to The Grand Mystery: Or, Art of Meditating Over an House of Office, Restor'd and Unveil'd, published in 1726; whether this is to be attributed to Swift or to Edward Ward is apparently unclear. A modern reproduction is for sale online but I couldn't find any more information on this book.
TL;DR: This story is recognisable as a mangled version of Donald Knuth’s solution to the ‘K most common words’ problem and Doug McIlroy’s review of it, in the June 1986 Communications of the ACM.
In the 1980s, Jon Bentley wrote a column called ‘Programming Pearls’ that appeared in the Communications of the ACM. He devoted the columns ...
I suspect this is Cynthia Voight's Homecoming.
Homecoming, set in the very early 1980s, tells the story of four siblings aged between six and thirteen, whose mother abandons them one summer afternoon in their car next to a Connecticut shopping mall during an aborted road trip to a family member in Bridgeport. Realizing that their mother is not coming back,...
This is "Del Rigor en la Ciencia", by Jorge Luis Borges. It is frequently associated with the phrase "the map is not the territory".
The plot is what you say, and the last line of the story says:
En los desiertos del Oeste perduran despedazadas Ruinas del Mapa, habitadas por Animales y por Mendigos.
This says that only broken ruins of the map remain, ...
The Mad Scientists' Club series by Bertrand R. Brinley
The Mad Scientists' Club:
A strange sea monster suddenly appears on Strawberry Lake, a fortune
is unearthed from an old cannon and a valuable dinosaur egg is stolen.
Who's responsible? Those seven junior geniuses -- and their wild
ideas. Watch out as the Mad Scientists' Club turns the town of ...