"An argument is a connected series of statements or propositions, some of which are intended to provide support, justification or evidence for the truth of another statement or proposition.
Arguments consist of one or more premises and a conclusion."
Image source: Hartmann Schedel. Publius Ovidius Naso and Plato. Public domain. Wikimedia Commons.
Source: Internet Encyclopedia of Philosophy.
Make sure there are no sharks in your roof: argue with validity and soundness. Learn how to do that in the article above.
Image source: SG Bailey. Public domain. Wikimedia Commons.