Imagine how crazy the “drugs” of the future will be. Instead of chemicals that slightly elevate your mood, make you relax, or give you crazy thoughts, there will drugs or electrical stimulation that directly activate those regions of the brain. They’ve done studies where they give a rat an electrical stimulus in the pleasure center of the brain when it hits a lever. The rat gets so addicted to the stimulus, it won’t even leave the lever to eat food and it eventually dies. The stimulation is more important to it than living. Obviously this could be dangerous, but it a more moderate form, there could be stimuli to provoke wild thoughts, relaxation, weird visualizations, extraordinary perceptions, etc. Should be one crazy future.