What is the aim of science? To find universal laws. Thus, if we know Physics, we can predict development of different processes. If we know Chemistry, we can predict the result of chemical reaction. So, if we knew History, we could predict the future. But we can’t. Consequently, History isn’t a true science. What do you think about it?

I've never thought of History as a science, but I do think that History has helped to spawn some pseudoscienses.

History, to me, is the flow of socio-economic and/or philosophic/religious thought changes that lead to a moment of dramatic thought change that shapes future actions.

We can't use history to predict the future because history is organic and mutable. We might be able to use history to predict the future with probability mathematics, but that's a science that's only possible on an American TV show.

Scientist would say:" Historical process has non-linear back-links".

At any rate many scientists tried to find correlations between different historical processes.

Historians use many of the tools of science to find out about the past, but the study of science is often full of guesses and unknowns. Science is full of unknowns also, but the way of finding out answers usually means spending more money and doing more precise experiments, while a lot of history we cannot find out no matter what amount we spend. I think the study of history is not quite a science but it is at least closely related to the investigative method of science.

I never thought of History as a science, Its results are hard to demonstrate and forcast can not be proved correct byt scientific methods. However as Myrddin says in investigating a case it does use scientific methods.It is at least a social science.Because it is concern with human behaviour it can't be any more.

But many scientists, including lev Gumilev with his Theory of passionarity tried to find universal laws of History.
This is an article by peter Turchin - "Transforming history into science : Arise 'cliodynamics'".

.http://tinyurl.com/6xrmwr