Without the usual sorts of things that would interrupt someone's focus--physical needs, social pressures, weariness--who knows how long Phalanx would sit there and sew if left indefinitely to their own devices. Once they get going, they seem set and ready to continue doing so forever.

They form quick little stitches, if not the neatest or most deliberate, and soon there is a seam of white thread running down their arm, sewing the wrap to itself.