Factual error: Benjamin leaves his family at some point after his daughter's first birthday (1970), and definitely before her second birthday. But a 1973-1977 El Camino is parked in front of their house as he rides away on his motorcycle. (02:24:15)
Factual error: When Benjamin comes back to visit Daisy at her dance studio, she says that their daughter is 12. Her first birthday was in 1969, so that makes the current year 1981 or 1982, but their family car is a 1986 Jeep Wagoneer.
Factual error: When Benjamin and Daisy are sailing "into the Gulf" and "along the Florida keys", the background shows mountains which do not exist in Florida. (02:05:00)
Factual error: When Daisy is called to the nursing home by the child welfare worker in about 1991, a brief shot of the home's exterior includes a 1996 Oldsmobile Bravada SUV driving by.
Factual error: When the tug leaves Russia, after the US declares war, all its lights, including a searchlight, are on. During war time, ships of nations at war sail under complete blackout. (01:20:00)
Answer: It is symbolic, showing that time never stops. Everyone will be swept up by the tsunami eventually. No force of nature can compare to time itself. Nothing at all.