1. A system, comprising: a processor; a computer readable memory in circuit communication with the processor; a computer readable storage medium in circuit communication with the processor; at least one image capture device in circuit communication with the processor; at least one display screen in circuit communication with the processor; and wherein the processor executes program instructions stored on the computer-readable storage medium via the computer readable memory and thereby: displays via the at least one display screen, in a first layer at first level of opacity, an image of current surroundings of the system from image data captured by the at least one image capture device from the current surroundings of the system; displays via the at least one display screen, in a second layer at a second level of opacity, an image of another environment that differs from the current surroundings of the system as a function of time or of place, wherein the second layer is located coextensive with the first layer; and selects the first level of opacity to present image data of the image within the first layer as: transparent relative to image data of the image within the second layer; or opaque relative to image data of the image within the second layer.