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		Challenges (2)
		ü Result: Must rethink many issues; can’t just “plug in” classic distributed systems theory ü Disconnection <> Crashed! ü Adaptability to deal with varying conditions – Transcoding proxies--scale content (e.g., images) to match available bandwidth – Mobile proxies to convert content (e.g., Postscript ® ASCII) – More clever ways of checking for data consistency – Application callbacks to monitor conditions (network, battery power, etc.)