Immersion (or exposure) therapy is a term for a methodology within psychological and therapeutic treatment. Its professional application is typically measured and calculated, but often successful, utilizing a method called “graded exposure”. This means identifying a fear/phobia or stressor for an individual, then designing a tiered system of opportunities for limited exposures, starting with either brief or mild versions of the exposure, then slowly working up the scale to more significant versions as the individual demonstrates comfort and progression. By breaking down the issue into more manageable chunks, it can be overcome incrementally. This is not universally successful, but it is regarded as a safer method that risks less, inoculating the mind with a lesser version of the stressor as many vaccines bolster the body against illness by building off lesser versions of a virus.