Foamstone

Foamstone is the stuff of which devices and machines are made. It is a data-sorbing crystalline silicorganic structure similar to mother of pearl and opal, initially built on an Indranet pattern but usually developing its own adaptive microstructure over time. The braincoral of machines is made of foamstone grown in the Star Anchors and the aiseed is bonded to it. Foamstone can also be used to make small devices such as scrollplates, feedbling, and iofaces. The largest foamstone artefacts are bubbles. Because foamstone is holographic, even if a bubble is destroyed, a sufficiently large fragment will contain all the knowledge ever shared on the foam. At currect data densities, this quantity, called the Doomsday Section, is about two meters square. because of all the data losses occasioned by recent calamities, people are very eager that no knowledge should ever be lost again.