Where are we then? We are at the point where, apart from revolutionary discoveries, science has slowed its pace. Faced with the great inventions of the past decades, probably for a few years we will walk much slower, that those who have even hypothesized a limit to discoveries and is not such a weird theory at heart.
For this reason, the evidence begins to be scarce (we have had enough time to notice the phenomena that surround us) and we must rely on scientific studies increasingly complicated and "fine" for small steps, so that someone these efforts seem excessive.
Is it logical and economical, for example, to spend millions on research and exploit important resources to "discover" or demonstrate (try to prove) that 480 milligrams of Aspirin are more effective than canons 500?
Does it make sense to waste time, money and strength to invent an engine that consumes 1 liter every 10 kilometers instead of every 9 kilometers?
They are problems on the verge of paranoia but they are confronted with the concept that science can not stop. Even a small step today, an apparently insignificant observation, will one day open the doors to revolution, to the complete knowledge of a subject, for this there are scientists and their studies, for this reason the researchers continue to study any topic.
And research and studies then, do they still serve? Certainly yes, but here too an endless chapter opens up.
Are all effective? All reliable? Are they falsifiable? Are all true or even among the most prestigious studies exist "black holes" that leave perplexed?
As in all human activities science can be used for good or for the sake of evil, it can be honest and clean as corrupt and false, it can represent the noble intent to progress as the obscure end of personal interest.