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" How can a school culture be so powerful as to bend and shape human behaviors in negative , nonproductive ways ? This scale-up issue has been a challenge for artificial muscles in general , which is why they still ca n't beat human muscles in such functions as arm wrestling , Bar-Cohen says . Important also , because information is affecting a wide variety of human enterprises in significant ways ( businesses are " flattening " and globalizing ; people are buying faxes , cell phones and computers ; schools are wiring themselves in anticipation ; governments are scrambling to handle information age problems , etc. ) . Walker , upon his arrival in Charleston , took up his quarters with his gang of human cattle in a two-story flat building , surrounded by a stone wall some twelve feet high , the top of which was covered with bits of glass , so that there could be no passage over it without great personal injury .