The Porous Machine
In the 1980s-1990s, consumer companies were marketing see-thru telephones with special built-in neon liner lighting that enabled you to see the inner-parts of the working phone which glowed in the dark.
In this same time period, Swatch (the Swiss wrist-watch manufacturer) was selling special see-thru wrist-watches which enabled you to see the inner gears and dials, long before Steve Jobs introduced his outrageous 1998s color-schemed iMac personal computer which enabled you to see inside its working wires and parts.
It seems like consumerism trends (i.e., Facebook) indicate a machine-design demand for user-friendly (or touch-friendly) devices/gadgets that invite the buyer/user to peek inside and comment on their personal experience with actually using the items (and learning to use the items) in a
private way (hence, the demand for housekeeper robots or soldier-drone servant robots).
Maybe this is all part of the Computer/Internet Age, but what is interesting to note is that this transparency or see-thru design trend may indicate a 'Lancet Revolution.'
Remember the T-1000 terminator robot from "Terminator 2: Judgment Day" (1991)? It was comprised of a pervasive mercury-liquid substance and could make 'adaptive' incisive arm blades on-the-fly (and tear into closing elevator doors, rip into windows in its way, etc.).
Swatch (Wikipedia)
T-1000 (Wikipedia)