Musings on particles.

I'm currently reading the rather excellent book called "Why does E = mc^2?" (The ^ sign should denotes exponential - I am writing this on my phone and it unfortunately doesn't do superscript.
Going through the chapter where the authors, Professor Brian Cox and Professor Jeff Forshaw are describing how to obtain a spacetime velocity vector.
While paddling through the mathematics like a confused gundog searching for a ninja duck in the weeds, my mind started wondering about that famous two slit experiment where it was found that the act of observing a photon's behaviour, changed it's behaviour.
In other words, if you look at a photon, you lose the ability to predict where it will go, and vice versa.
I think Terry Pratchett calls them inspirons, little particles of inspiration which fly around till they hit a receptive neuron.
One of those hit me and made me wonder.
This is probably utterly wrong.
We, humans, are three dimensional creatures with an imperfect perception of a fourth dimension, time. Don't believe me? Show me a hypercube. Not its shadow, I want to see the real deal.
It can't be done.
In the book mentioned above, Cox and Forshaw show that in order to absolutely describe an object's position, we use a vector which essentially contains representations of the coordinates of an object, as well as an added time descriptor.
That's an imperfect description, but it will do.
At the risk of sounding like I am anthropomorphicising photons, if we are four dimensional massive objects with a limited perception of the time ldimension, is it possible photons are three dimensional massless objects with a limited existence on four dimensions?
The energy of an object equals mass times the speed of light squared, but photons are massless particles which have the velocity c.
Following from that (this is shaky for me) if an object has no mass, it exists as a point in spacetime, giving it three dimensions. A point has an x dimension, a y dimension and a time dimension.
Not really much point to this post except to pour this out. If anyone spots and flaw in all this, feel free to correct me. I would prefer to be educated rather than wrong.