"# 4 - How do we know without a doubt the world is billions of years old ?"
"How do we know anything for sure ? We ca n't be certain of the Earth 's age in billions of years , but we can use carbon dating to figure out it 's older then 55,000 years , which refutes creationism ."
"How do we know without a doubt"
"We ca n't be certain but we can use carbon dating to refutes creationism"