Human Freedom, Divine Knowledge, and Mere Molinism

Does humanity possess the freedom to think and act, or are we always caused and determined to think and act--exactly how we think and act--by things outside of our control? If we are always causally determined to think and act by things outside of our control, then how can humans be genuinely responsible for any of our thoughts or following actions? However, if humanity is genuinely free and responsible for at least some of our thoughts and actions, then how can the Christian rationally affirm the doctrine that God is totally sovereign and predestines all things?
In Human Freedom, Divine Knowledge, and Mere Molinism, Timothy A. Stratton surveys the history of theological thought from Augustine to Edwards and reaches surprising historical conclusions supporting what he refers to as ""limited libertarian freedom."" Stratton goes further to offer multiple arguments appealing to Scripture, theology, and philosophy that each conclude humanity does, in fact, possess libertarian freedom. He then appeals to the work of Luis de Molina and offers unique arguments concluding that God possesses middle knowledge. If this is the case, then God can be completely sovereign and predestine all things without violating human freedom and responsibility.