The Aperture Science Enrichment Center welcomes you to the Aperture Science 3 meter sieve. The only exit from this hermetically sealed chamber is through the carbon nanotube mesh covering the doorway. If you are not able to negotiate the carbon nanotube mesh on your own, an Aperture Science 90 kiloton hydraulic persuasion piston will assist you in the experiment. Testing protocols require us to inform you that in some rare cases the carbon nanotube mesh may irritate your skin, eyes, bones, and central nervous system.