( painting to enlarge)
A series of steps rise from the right till they reach an invisible barrier. On one side the ground reflects everything. Spheres and other objects have moved up the steps but some have become stuck in reciprocal depressions. The tallest monolith has been built short of the barrier and no matter how high it cannot exceed its own limitations. The tall wooden yardstick accepts energy that bleeds down through stone blocks. The shorter monolith is built part beyond the invisible barrier because its yardstick has been broken and discarded. The energy flowing through this monolith comes from the top. Will the green sphere have enough inertia to reach its monolith?