Hanae put a hand to her mouth in shock. BTL stood for Better Than Life. BTL chips were supposed to be entertainment simulations that someone plugged into his head through a datajack or a special chip receptacle. They allowed one to "relive" an experience as though actually doing it himself. But the experiences were more than realistic. Unlike ordinary simsense entertainments, all BTL sensory impressions were heightened electronically, pushed into realms beyond any normal person’s experience. The enhanced impressions were supposed to be unbelievably thrilling, more sensual than anything that real life had to offer. Sam didn’t know if that were true, but he did know BTL was highly addictive. Users often lost themselves in the chip’s world, abandoning the real world until they died of neglect or the real world intruded fatally on what they perceived.