Tron 2

[Pedro]

....and it didn't take a blatant shift to do it....these are the best derailments on my opinion.

[RacingHippo]

It hasn't been derailed, merely coaxed along a natural path of progression.
See, progressive, innit.

[Pedro]

Exactly.

[Valhall]

Ahaha. You guys are really derailed yerselves  :mrgreen:

[rogerg]

never mind that, did you know:

Fishplate

In rail terminology, a fishplate or joint bar is a metal bar that is bolted to the ends of two rails to join them together in a track. The name is derived from fish, a wooden bar with a curved profile used to strengthen a ship's mast. [1] The top and bottom edges are tapered inwards so the device wedges itself between the top and bottom of the rail when it is bolted into place. [2] In rail transport modelling, a fishplate is often a small copper or nickel silver plate that slips onto both rails to provide the functions of maintaining alignment and electrical continuity.

History
The device was invented by William Bridges Adams in May 1842, because of his dissatisfaction with the scarf joints then in use. It was first deployed on the Eastern Counties Railway in 1844. He patented his invention in England, Ireland and Scotland but, supposedly by some underhand means, the patent shortly afterwards passed to James Samuel, the engineer of the ECR.

Electrical connection
Electrically bonded main line 6-bolt rail joint on a segment of 155 lb/yd rail.
When railway lines are equipped with track circuits, or where the line is electrified for electric traction, the electrical connection provided by fishplates is too poor and unreliable and has to be supplemented by bonding wire which is spot welded to the two rails either side of the joint.

Alternatives
Even though fishplates strengthen the weak points represented by rail joints, improvements can still be made.  For example, the joints can be welded together using the thermite welding process.

Turnouts
The moving blades of a set of points can be connected to the stock rails by looser than normal fishplates.  This is called a heeled switch.  Alternately, the blade and stock rail can be a one piece heel-less switch, with a flexible thinned section to create the moving heel.

[Pedro]

...and, while that is very cleverly related to derailments, it is surely not a "progression" from Tron 2 or film score composers and so (almost) illustrates the more blatant form of derailment.  

[Mouse]

But can you derail a conversation about derailments? Our sort of thread derailments, that is.

[rogerg]

...and, while that is very cleverly related to derailments, it is surely not a "progression" from Tron 2 or film score composers and so (almost) illustrates the more blatant form of derailment.  

ah, 'tis true. totally blatant.  I confess.

[Pedro]

'Twas right masterly done though, sire.