Dreaming is life's great solitary adventure. Whatever pleasures or terrors the dream state provides, we experience them alone or not at all. Just imagine, if other people could literally invade our dreams, what if a technology existed that enabled interlopers to create and manipulate sleeping life with the goal of stealing our secret thoughts, or more unsettling still, implanting ideas in the deepest of subconscious states and making us believe they're our own? Sounds creepy to me.