refutation of time travel

i had read this hilarious short story elsewhere before, but recently saw it again on a site with comments, one of which is interesting:

Very entertaining to engage in the impossible paradoxes, but it's all still nonsense:

BACK TO THE NOW - Why time travel is not possible

Forget even getting to the array of unworkable paradoxes if you were to visit the past or future, there is no such thing as the past, future or any related potential to visit or interact with. By the most accurate accounting of the phenomena known as our conscious life experience, reality is only witnessed by us as individuals alone and not collectively as any universally observed form of influence we’re all being controlled by or through. We are each alone and uniquely different in how we see reality or passing time around us constantly. No such ‘universal mind’ or so documented universal account of passing time exists now, in the past or future that runs continuously, like a movie, potentially over and over again. The fact we’re all interacting with the same earthly plane of existence is somewhat deceptive in this context and in large part inadvertently serves to lend the idea that time travel can have a potential point of arrival in the past or future.

Recorded historical events, as representing the complete event from every aspect of how it was experienced by every individual who attended the event involves something that cannot be replicated or experienced in quite the same way again, even if the exact same series of actions could be observed again. Time travel is flat impossible because by definition passing time doesn't exist as another removed or detached potential destination anyway. History or the future exists strictly on record, in our memories or in our plans and dreams in our minds alone, and not as some potential real world breakthrough we can physically experience in life. It’s amazing how much energy and financial commitment from some very bright minds is being wasted on fervently attempting to find some way to make time travel in this sense a reality or proving it’s possible. I’m scarcely trying to rain on innovation, but how so many who are so very smart can appear to be so oblivious of what ought be amongst the most elementary observations of basic reality that we all experience 24/7/365 is beyond me. Just as we always hear, life is only in the progressing moment right now, and at no other time.

update: even talking about time can be difficult :)