Arogant wishful thinking on theIr part. Transhumanism! They see the human body as a purely mechanical system. Because they willingly refuse God's creation or the spiratual dynamic within His creation they imagine themselves masters of this world. The even imagine their agenda has no spiritual basis. Instead they are ignorant puppets of spiritual evil. Therefore their meddling can only produce evil.
Truly these days are as the days of Noah when every thought of men's hearts served evil continually. How pitifully blind they are that the judgment of God is upon them already.
Believe on the Lord Jesus Christ and you shall be saved! There is no salvation in any other. Without Christ the wrath of God abides upon you. Know ye not that man fell and died because he believed the sayings of the serpent instead of God. How pander ye after material technocracy thinking you will lengthen your days through knowledge of good and evil? The path you choose enevetably brings only death and ever has. Turn from evil, believe the Gospel and be saved unto life everlasting.