Intergalactic Fugitive

Recently, I was thinking about the nature of reciprocity in some cases of natural phenomenon, for example, Newtons Thrid Law of Motion, or, Faraday's Law of Induction. Considering that spacetime distortion, due to a gravity field, leads to a change in the light path, or, a change in light velocity, when observed from a region with diferent spacetime metric. Would a induced change in light velocity, induce a distorion in spacetime (to keep c constant at local reference), thus, generating gravity? And, lets consider that the propagation of the light (in vacuum) would be distorted (or have its aparent velocity changed) by some hypothetical advanced technology. It's the opposite direction of: Mass > Gravity > Spacetime distortion > Light distortion. Where, a induced light distortion would create: Light distortion > Spacetime distortion > Gravity Note that the spacetime warp would happen because c must be constant. Is this idea consistent? Is there any current model describing this? I do not know, hence the "hypothetical advanced technology".. Like a closed system, or a "dark box" filled with vacuum, that somehow manages to change the apparent c for a observer outside the "dark box". Look at the image above, and consider that you, as a observer, is sitting outside the compressed spacetime region, you would notice the light moving slower inside that region, but, since the light is propagating in a space region where the metric is smaller, c would still be 299,798,452 m/s. In the sense that for an observer inside the compressed spacetime region, the velocity of the light would be normal. The question here is, since gravity (spacetime distortion) cause light to warp, would a warped light (due to a hypotetical, and very advanced device) cause the spacetime to warp, and generate a gravity field? Maybe this is too much of a philosofical question rather than only an physical one. But hey, philosophy and science is quite the same, depending on your perspective I'm asking this, to get answers from other people, that may have a different understanding, from a different perspective. And maybe, start to develop a mathematical model for this. Laws of physics cannot be considered as absolute truth, since it's just a mathematical model and a logic way of abstracting some phenomena. It is still truth, but not the absolute thuth, (and yet, it is thuth only until it is proved wrong or incomplete) What I'm asking is very theoretical, that is why I've posted here in the speculative section. I cannot prove that light propagation can be warped, thus, warping spacetime (yet, we know that spacetime can be warped, thus, warping light). Can someone prove me that it cannot? If yes, please, do it. ... Well, think in a device that can change the energy density of the vacuum, or the electric permissivity and magnetic permeability (the elastic constants of spacetime that defines c). I am not saying that what I said is true, I cannot confirm if my statement is true or false, if it is false, prove it and enlighten me. Remember, "Beyond the Standart Model", "Speculative Physics", "Theoretical Physics", everything is possible, until proven wrong.