Science of our world is constantly changing, we have to keep correcting and improving it without interrupting the search.
Whatever seems to be absolutely obvious today, ceases to be indisputable tomorrow, and it is even possible that whatever was considered beneficial today, tomorrow will become harmful. Our desire constantly keeps changing and we discover a new science in it.
And since the desire to receive pleasure can change into its opposite on a daily basis, then useful things can become harmful.
Moreover, by operating only through our egoistic desire, we use all of the discoveries that were made in nature for the sake of self-benefit, and therefore the outcomes of the evolution of science harm us.
In other words, we always use it for evil. And we see that science mainly develops because we need it for wars and mutual destruction. If not for this, we would not keep evolving at all.
All the wonderful scientific discoveries are used to serve our egoism.
From the 4th part of the Daily Kabbalah Lesson 10/21/10, “The Wisdom of Israel in Comparison to Science”