In 2015 we can rewind the TV, our CCTV footage and, if we wear an action cam, our latest adventure. However if we walk down the street and something happens we didn't quite catch, the annoying fact is that there is no 'real-life' rewind.
In the not-too-distant future anyone who can afford it can have a chip implant under their skull. This allows everyone to access a 24/7, 5 minute delay loop so that anything that happens to you in the last 5 minutes can be played back with sound and vision in your brain. If necessary you can transfer the footage to an external device and download it again later.
A simple, minor operation places a tiny TotalRewind™ microchip inside your skull and in contact with the surface of your brain (its cortex).
On correctly entering the product code, the chip (which has biological components) starts to grow an outward-spreading network that eventually covers the entire surface of your brain with an ultrafine network of pseudo-bio threads and nodes. Effectively each node is a tiny biocomputer.
As you go about your daily business, these nodes detect the activity on the surface of your brain and continuously upload it to the chip.
The chip itself contains a vast memory array that can store the 2-D information from your cortex as a series of images. At today's level of technology, we can selectively store the past 5 minutes of your visual and auditory cortex. When you wish to play back your experiences, you simply activate the chip which projects the stored images back onto your cortex.
This means that, by temporarily closing your eyes (and blocking your ears) you can experience everything you saw and heard in the previous five minutes -- as though it is really happening!
WARNING - Do not do this while driving or operating machinery! It's best while relaxing in a darkened room however the system will work anywhere.
You may wish to carry blackout eye-masks with you in case you need an instant replay. You can rewind and slo-mo. You can upgrade to the super-IP (image-processing) version. This allows you to zoom and perform image enhancement in real-time (playback mode only). On review, you can decide whether to save the recording to an external device using wireless transmission or, by subscribing to our network, you can do this continuously. Note that if you do not save or store it, the 'footage' gets overwritten in a 5 minute loop.
In scientific terms, how realistic is this proposal? In biological terms, will recording a movie of 2-D images of the cortex and then re-stimulating it with those images result in a playback as described?
What technological hurdles have to be overcome before this is reality? Is it theoretically possible under 2015 technology (even if it would cost billions) or, if not, what specific advances must we make.
What benefits and drawbacks must be considered?