All science is materialistic

[Jehanne]

That is not how futurism is defined:


https://www.merriam-webster.com/dictionary/futurism

And, so, I am not a futurist.

By that definition, neither was Clarke. But, by the primary definition of futurist, you both are:

 one who studies and predicts the future, especially on the basis of current trends

Boru

Here is the definition:

1 : one who studies and predicts the future especially on the basis of current trends
2: one who advocates or practices futurism

https://www.merriam-webster.com/dictionary/futurist

I do not study and predict (I am not a scholar) the future, and so, I am not a futurist in the sense of #1 and certainly not #2, as I have indicated.