Hi everyone again
Here is a quote from the book 'A brief history of time" by Stephen Hawking (I am currently reading this book
)
'In order to talk about the nature of the Universe and to discuss questions, such as does the universe have a beginning or an end, you have to be clear about what a scientific theory is. I shall take the simpleminded view that a theory is just a model of the Universe, or a restricted part of it, and a set of rules that relate quantities in the model to observations that we make that we make. It exists only in our minds and does not have any other reality. '
Thankyou, and hope that this helped
,
Sebastien.