As expected, Lifegazer resorts to the "if you can't dazzle'em with brilliance, baffle'em with bullsh" tactic.
Yes, your perceptual reality is the only reality you can comment on, and yes, everything you experience is the result of interaction of your senses with something else, whose nature you may never be absolutely certain about; however, science doesn't deal with absolute certainty, but with reasonable certainty. It is reasonably certain that our senses detect something which is real; we understand, quite completely, how energy and vibration and other means brings us specific information about the objects 'out there', and how our minds assemble this information to give us reasonably certain knowledge of the world 'out there'.
Science is a tool used to ascertain more about those reasonably assumed objects, they being the only objects we can make reasonable judgements about. At no time does science attempt to make assumptions about anything, other than what is real exists, and what is not real does not exist.
Since we have no evidence that what we perceive to exist does NOT exist (in the vast majority of cases), then we can accept the primary axiom that our senses are giving us accurate information to a degree about what does really exist.
When our senses fail us, it is science that explains why it fails us, and how we can understand the reality that lies behind our false perception.
When the automated chessplayer was making its rounds, people's senses were fooled repeatedly with a clever display of showmanship; the entire interior was displayed to show machinery and empty space, and the chessplayer did its function admirably well. Yet we know now how this was accomplished - a careful stunt involving displaying the interior in sections rather than all at once, allowing the person within to move about and continue to conceal himself. Illusion - but illusion explained.
In this case, we could not perceive the reality of the chessplayer through our casual perception of the device; however, in-depth and analytical perception allows us to pierce the illusion and perceive the reality of the chessplayer.
This is the nature of science - to penetrate the illusions we perceive and reach the root of the reality of that which we perceive.
After all, I cannot in any way perceive an atomic structure, nor refraction of light wave-particle packets, nor a tectonic plate. Yet these things are real, nonetheless, and if I had access to the right tools, instruments, and education, then my perceptions might be enhanced so that I could perceive these things.
Your argument seems to focus on reality being an internal event biased by perception; however, the fact is reality is independent of perception and therefore independent of the internal reality. You can either choose to trust your senses, and accept the reality, or you must deny your senses and thereby know nothing at all. Failure to accept your senses is illogical - unless your senses are so damaged, or your perceptions so inconsistant, as to make you doubt your senses.
Since I choose the first option, accepting my senses, then I must also choose to accept science, for science accurately describes what I sense, and further tells me what I can expect to sense. I can expect, for example, that if I perceive a tank marked "gasoline", closed, which is engulfed in flames, then I can also reasonably expect that said tank may have gas in it, and if so, that the contents may be expanding due to heat, and run a chance of spontaneously igniting - thereby exploding and flinging metal bits abroad, possible resulting in being pierced with flaming metal bits. Since science and perception are consistant, I can make sufficient assumptions to protect my existance and well-being by running the other way.
Yet, if I choose the second option, then I may as well watch, or even approach this strange thing I perceive, since the perception is irrelevant to the reality of what I perceive. Therefore, consistant with logic, it is reasonable to assume that those who fail to trust their senses lead shorter lives than those who trust them.