6 ms·

So if this is what remained on the cave wall ... it was the plan that killed the whole tribe?

• pletnes 5y ago
  Or maybe they didn’t have whiteboard markers, only permanent ones.
  • kalonis 5y ago
    They had both, but some new hire confused them.
    • failrate 5y ago
      If someone writes on a whiteboard with a permanent marker, immediately black it out with a dry erase marker. Then wipe it off. The dry erase marker's solvent will release the permanent marker ink.