Final answer:
George Mason was skeptical and doubted the effectiveness of the Convention due to his belief that the Constitution needed amendments, including a bill of rights and the immediate end of slavery.
Step-by-step explanation:
George Mason's point of view going into the Convention was that he was skeptical and doubted the effectiveness of the Convention. This influenced his perspective because he believed that the Constitution needed amendments. Mason did not support the Constitution because it did not contain a bill of rights, and he also wanted to immediately end slavery. However, his ideas were not incorporated at the time, but a bill of rights was later included during the First Congress in 1789.