Sinskey is supposed to be 20 years older than Langdon
In the book Elizabeth Sinskey is supposed to be about 20 years older than Langdon, old enough to be his mother. In this movie she is played by an actress who is 12 years younger than Hanks!
They should have casted someone like Meryl Streep or Jane Seymour, who are both still less than 10 years older than Hanks.