Materialists think that all of the energy and matter in the universe is governed by physical laws. A planet circles a star at an accurate distance as a result, electrical impulses travel along neurons in the mind and blood circulates in arteries--all in accordance with law.
Everything exists in its current state due to an infinite chain of law-abiding events that preceded today's circumstances. Some things can happen chaotic and random, however in fact everything is moving and interacting in accordance with precise laws such as for example those of motion, electromagnetism, gravity and strong and weak nuclear forces. It isn't really by chance a coin will undoubtedly be heads about 50 % enough time and tails another half. Subtleties in the manner the coin is held and the forces from your own thumb dictate just what it will undoubtedly be at every flip.
Every atom atlanta divorce attorneys among your cells, every molecule you breathe currently and every photon and cosmic ray from sunlight and stars striking your system at any moment were all predetermined by physical sequences set in place with the Big Bang of the materialist's cosmogony. That electron in the outer orbital of the atom in the molecule in the cell of your skin on the end of one's nose includes a history back through eons of time. It isn't there unintentionally but instead guided to the end of one's nose for legal reasons in quite similar way a cow moves by way of a cattle chute. There's only one entry way, the Big Bang, and only 1 destination, the finish of one's nose.
Things are thought to have always behaved obediently in this manner. Thus every present event and every particle could possibly be explained if one were long enough winded and smart enough to spell it out their physical history.
This concept is termed determinism, a corollary of materialism. It appears a reasonable type of thing since with precision we are able to measure and predict the motions of the planets, the speed of an apple falling from the tree and the enzymatic action of pepsin on protein in the meal you merely ate. This is actually the mechanistic science of Newton and may be the basis for the logic in evolutionary thought. The more we realize concerning the materialistic laws of nature, the higher the predictions.
Now then, if every atom, every little bit of matter and every energetic event are predetermined, then our brains are predetermined too. Because the materialist would argue that thought is really a product of brain matter, then every thought will be predetermined since, in accordance with materialists, thought is only biochemical reactions and nerve transmissions that proceed in accordance with law.
But this might mean there is absolutely no such thing as free will for brains, any longer than blacktop includes a selection of whether it gets hot or not when subjected to the sun. However, when there is free will, then that creates an issue because it would deny that materialism is all that there surely is. Since evolution presumes materialism is all there's, their foundation crumbles. Your free choice to trust in evolution will be the very act that denies its validity.
It will be a fascinating exercise to ask an evolutionist if he freely chooses to trust in evolution. (The solution will be yes, needless to say.) Then ask if he believes the universe is manufactured from matter, energy and the laws that guide them. (That answer will be yes too.) With those commitments affirmed in a document notarized and signed in triplicate so he cannot wiggle from the trap you have set, you'll take the logical journey through determinism proving that free will and materialistic evolution are antithetical. That needs to be fun... for you personally at the very least.