The document discusses the history and current state of wearable computing. It describes how early wearable computers were invented in 1961 for roulette prediction. Examples of current uses mentioned include the Land Warrior project, SixthSense project, and wearables for health/fitness, personal use, industry, and military applications. The advantages of wearables include mobility, multitasking, and hands-free use, while disadvantages include potential heavy equipment, high costs, and side effects. Wearable computing is still emerging but shows potential for future growth.