Sci Fi TV science or fiction?

If you define absolute, completely pure invisibility as something not interacting with light at all, not even one photon, then you are right, such a thing would be invisible and blind. Dark matter is believed to not interact electromagnetically at all, photons just cross it without any interaction. In this respect, dark matter is indeed blind.

Your misconception comes from taking this literal definition to unnecessary conclusions in a practical sense. It is entirely possible (and common place) to have an intermediate situation where enough of the light crosses so as to make the object or material invisible yet enough of it is absorbed so as to make it able to see. I already gave the example of air, although I admit that an eye made of air would possibly have to be quite big in order to capture the same amount of photons as our eyes. In fact any invisible substances and materials in our world (except dark matter) have this intermediate point, they all surely absorb light so they 'see', but they are nonetheless invisible because they also let enough light through. One thing does not preclude the other.

Since cryonics exist, it's clear that there are people who hope that those difficulties may one day be overcome (as well as people who found a way to make a lot of money from those possibly wrong hopes ). 

Perhaps the dynamic states could be stored separately from the physical brain atomic state, and once the physical brain has been reconstructed its dynamic state could be re-induced (hey we are just hypothesizing here ).

Alright I already retracted from that in a later post.

And at any rate, even admitting that wondering what travelling at the speed of light might 'look like' is physically nonsense and (as far as we can tell today) even a "non-scientific question", when we come to discussing how reasonably sci-fi books or movies depict such situations, it is legitimate to check how far can we get as a thought experiment.

For example it is not entirely unacceptable to have a thought such as (following the previous example of Sirius for consistency):

Let's say we travel to Sirius, for simplicity let's round its distance from Earth as exactly 9 light years.

The Sirius we see from Earth just at the moment of leaving is the Sirius of 9 years ago (Earth or Sirius time assuming for simplicity that Earth and Sirius don't move relative to each other at all).

Assuming that we can depart and arrive at light speed without any acceleration / deceleration (as a photon would) and we travel to Sirius at light speed, we will arrive there in 9 years Earth or Sirius time.

When we arrive, the Earth we will see from Sirius is the Earth of 9 years ago (Earth or Sirius time).

It follows that the Earth we will see on arrival is exactly the same as the Earth we saw on departure. We will see ourselves departing (and consequently since the same applies for any intermediate distance, we will simultaneously see ourselves during the whole trip, from our departure until arrival, somehow we will see a 'superposition of all our trip in a single image'.

While this is clearly unphysical for any massive object such as ourselves, there is nothing wrong in the logic itself, it is in accord with Special Relativity.

The Earth to Sirius example was just to provide some physical case for the thought experiment, you don't need to think that you 'depart' from somewhere and 'arrive' at somewhere else, that instinctively involves some kind of acceleration and deceleration that light (in the vacuum) does simply not require. The effect I was alluding to is that, by definition, if you could travel at the speed of light, light travels at the same speed as you do. Therefore, even if I reckon that this is not a physically sensible question, at any 3-D space point in the trip you would see the same light as you would see anywhere in your past journey at any other 3-D space point. This is somehow the meaning that at c time does not get "experienced", even if surely photons travel through spacetime at a definite speed, they surely visit different 3-D space points, but time is irrelevant because all those 3-D space points are simultaneous from the point of view of the photon.

At any rate even if I follow your statement, we may never see ourselves by a septillionth of a second, but we would see a superposition of all the states along the trip which happened a septillionth of a second of our passing through. If we would have been leaving a short 'bread-trail' as Grimm's brothers Little Thumb, we would see it as a superposition of all its states during the trip, just a few septillions delayed from the moment we had left it.