54ed81ce-0289-4f93-87b5-b004e4975b37

So, taking psychedelics by yourself seems to have the potential for inducing either paranoia (since you have a certain belief, notice the positive evidence that reinforces that belief rather than the negative evidence suggesting the belief is a delusion), or to wishful fantasy such as grandiosity, for the same reason as described as above, you are more suggestible to yourself. However, when anchored with the delusions of another human being, this self-reinforcing pattern of thought doesn't seem to happen as often unless there is something in the environment that would perpetuate paranoid thoughts - for example, worrying what another tripper might do while tripping.