Starting from one word, and clicking subsequent links, and actually reading the subsequent articles. Here are two adventures I went in Wikipedia.

Buckminster Fuller
Fullerenes, dual polyhedra, quantum dots, excitons, polariton superfluids,

Higgs Boson
Yukawa interaction, ZZ diboson, Quantum triviality, Fermions, Faddeev–Popov ghost, Penning trap, optical tweezers, ambiplasma

... I think I should leave Wikipedia alone for a while.

Every now and then I take a picture of a very elaborate piece of scaffolding. The shape of the intersecting pieces they make and the depth I think are very interesting.





They remind me of an Escher drawing.




In a similar vein is this piece, "Framework I" (1975) by Michael Fossick

The SCA (Society for Creative Anachronism) is a medieval re-creation society (founded in 1965) which I participated in from 1987-1991. The Australian branch is called Lochac. It has an "Order of Precedence", a list of people who have received the most and highest awards in the group's history.

In May 2007, some 16 years after I had left the group the Order of Precedence was some 1,915 people long. With the most awarded person in the number one position. This list changes weekly (on some minor scale).

Here is a list of people I knew (and hung out with) from that group, and where they rank on that list. I generally knew these people by their SCA name, but where I knew people by a different moniker I've included that.

1.	Elffin of Mona
18.	Eleanor Lyttellhayles
19.	Reynardine de Clifford
21.	Corin Anderson (Topsy)
22.	Gabriella della Santa Croce (Spyder)
23.	Valerian Zakharevitch Druzhinnik
25.	Styvryn Longshanks
26.	Rhyllian of Starfire Retreat
27.	Rowan Perigrynne
28.	Haos Windchaser
29.	Bryhony Beehyrd
32.	Kane Greymane
34.	Gerald Swinford (Barnaby)
46.	Lucrezia Lorenz
59.	Thorfinn Hrolfsson
68.	Richard de la Croix
73.	Robert Gordon of Ravensbrook (Robby G)
80.	Aislinn de Valence (Megan)
83.	Tovye Woolmongere (Tony)
88.	Hassan ibn Ysau (Denis)
93.	Esla of Ifeld (Sue)
95.	Myfanwy of Aberystwyth
117.	Sven the Stormdriven (Aroleon, I think)
133.	Osgot of Corfe
151.	Pietro del Toro Rosso
156.	Miriam Galbraith
275.	Lachlan Bradoc (Tim)
285.	Geoffrey Jeffries
288.	Ingibjorg Ambadöttir (Jocelyn, I think)
305.	Giles Leabrook
327.	Torgon Yuand
333.	Robert of Starmount
339.	Hamish MacTalla
340.	Dana of the Green (Lyra Dana)
392.	Ian the Upstanding
644.	Sebastian the Decadant
654.	Stephen of Irongate
663.	Tako Jiro (Borchardt)
687.	Lachlan Tadhg (Kieran)
701.	Maeva Torfadottir (Caz)
776.	Robert Furness of Southwood (ME!!!!)

I'm the last important people I know. There are several people missing off this list. Probably because they kept changing their name, and I don't know their most recent SCA name.

In 2000 I visited the small town of Lençóis, in the state of Bahia, Brazil. There I was taught a version of dominoes by a friendly Bahiano. He didn't tell me the name of the game, but I christened it Lençóis Dominoes. I bought a domino set and played it with other tourists while travelling around Brazil. Some research on the web shows there are many similar games to this. So I have taken the rules of one of these and reworded them to make the written rules of Lençóis Dominoes.

Number Of Players: 2 to 4

Lençóis Dominoes plays much like Draw Dominoes, except that the goal of the game is not just to go out, but to make the open ends of the layout add up to 5 (or a multiple of five). It is one of a family of games known as "point games".

Setup
After shuffling the dominoes, each player draws tiles to make up their hand. The number of tiles drawn depends on the number of players:
  – 2 players draw 7 tiles each
  – 3-4 players draw 5 tiles each

The remainder of the tiles make up the boneyard (or "stock"), and are held in or reserve to be drawn upon at need.

Gameplay
The lead goes to the heaviest scoring tile. 5-5 should be led first (scoring 10), but if no player has this in their initial hand then (in order of "weight") 6-4 (scoring 10), 5-0, 4-1, 3-2 (scoring 5 each), then 6-6, 4-4, 3-3, 2-2, 1-1 (not scoring).

The first tile played can be played off from all four edges. This initial tile is known as the spinner. If the spinner is not a double, only 2 edges (one at the end, one at the side) from each half of the tile can be played off (e.g. if the spinner is 6-4, four subsequent tiles can be played from this, but only two tiles on the 6 and two tiles on 4).

All subsequent tiles connect on their ends, except doubles which only connect on their sides (long edges). Play proceeds to the left (clockwise). Each player adds a domino to an open end of the layout, if he can. If a player is unable to make a move, he must draw dominoes from the boneyard until he can make a move. If there are no dominoes left, then the player must pass.

The object of the game is to make the open ends of the layout add up to 5 or a multiple of five (5, 10, 15, 20, etc.). The player who makes such a score receives that number of points.

At any time there are 4 open ends. When a double is played, all af its dots count toward the total (this includes the spinner, if it is a double, all its dots count while either side (long edge) is open).

Examples

1. If the first tile placed is a 5-5, then the player scores a 10. At this point all sides of the 5-5 are available for play.
2. If the second tile placed is a 5-0, then the player scores a 10. At this point three sides of the 5-5 are available for play, as well as the blank.
3. If a 3-5 is played on, the 5-5, the total is 3 (3 + 0), so that move scores no points. If the next move is a 0-2, then the total is 5 (3 + 2), so the player scores 5 points. The top and bottom of the initial 5-5 are still available for play, as is the 3 and 2.

   The ends of the initial double (the spinner) do not count towards the point total once both sides of the tile have been played.

4. Four moves later, a 5-4 has been placed atop the 5-5, a 2-2 has been placed off the 0-2, a 2-5 has been connected to the 2-2, and a 3-3 has been connected to the 3-5. The total is 15 (5 + 4 + 3 + 3 ), so the player scores 15 points. There are now 4 open ends: the bottom of the initial 5-5, the 3-3, the 4, and the 5 on the right. Note that the top and bottom of the 2-2 are not open.

Ending A Hand
A hand ends either when a player plays all his tiles, or when a game is blocked, at which time the lightest hand wins total of his opponents points (minus any points in his own hand), rounded to the nearest 5, and divided by 5. For example, if the winning player has 3 points in his hand, and his three opponents have 5, 11, and 13, then the total difference is 26 (5 + 11 + 13 - 3). This is rounded down to 25 and divided by 5. Thus, 5 additional points are added to the winner's total. All players retain the points that they have attained during gameplay, but only the winner gets the bonus points at the end of a hand.

Winning A Game
A game is generally played to 100, 200, or whatever is agreed upon before the game begins.

A Cribbage board can also make a handy scorekeeping device. If a Cribbage board is used, the point totals during play (5, 10, 15, etc.) are divided by 5, yielding 1, 2, 3, etc. End-of-hand bonus points are still given full value (in which case they become even more important). Games played using a Cribbage board are typically played to a score of 61.

Download a PDF of the rules here