A Biological Adaptation Regarded as a Program for Wetware EMERGENCY DUMP NON-RELEVANT DATA FORWARD SPEED: TWENTY-FIVE MPH ON THE RIGHT: CONCRETE WALL ON THE LEFT: LARGE, FAST-MOVING OBJECT AHEAD: TREE BRANCH, STILL MOVING, BRUSHY, WIDER THAN LANE CHANCE OF DODGING: ZERO CHANCE OF RIDING THROUGH: ZERO CHANCE OF STOPPING: ZERO FORWARD SPEED: FIFTEEN MPH IMPACT COMBINED MASS PROCEEDS ON ORIGINAL COURSE AT DECREASING SPEED (dear God, don't let me swerve, don't let me fall, _don't let that car snag the end of this branch_.) FORWARD SPEED: ZERO ROAD NARROW, VISIBILITY POOR OTHER VEHICLES AVOIDING TANGLE (dear God, how long can they keep it up?) BRANCH AFFIXED BY TWIG THROUGH RIGHT-HAND PEDAL FOOT FREE BIKE FREE (I'm afraid to go back into the tunnel after that branch, but I've got to come this way again.) END OF BRANCH CUT, NOT BROKEN (what was the last image before the shock amnesia? A large vehicle passing, possibly an uncovered truck loaded with tree prunings.) UNREASONING ANGER TRAFFIC NOW PERMITS RE-ENTRY, CONTINUATION OF JOURNEY (fiddlesticks! That was a brand-new sock.)