Do you believe in God? If so why? God has not been proven by science.
Now please don’t take me as giving support to the dream - future scenario - this is not what I believe well not precisely. However, I see there are some difficulties with the basis for the rejection of Harun Yahya books.
Firstly, you have not read much about him … so how can you form an opinion about him? And even if you didn’t accept him at least give yourself a chance to decide which of his words you choose not to agree with.
The soul is a part of the belief system of Islam.
According to science you say “there is no such thing as a soul” this is not true. According to science “there is no way to measure the existence of a soul at the present level of technology” it therefore classes the soul as something that can neither be said scientifically that there is one nor can it be said that there is not one.
The concept of some sort of time travel is true but there is more to this argument but it seems you have accepted this part … when in reality discussions on time travel are in their infancy. Time Dilation is what has been currently understood in the light of relativity.
Take from people what they have to be true and leave from them what they give from falsehood this way you are not missing out.