Test-pit L8 at Laetoli Site S. In the northern part of the test-pit (at the top), the Footprint Tuff is particularly altered, damaged by plant roots and dislodged along natural fractures. |
If you want to know why science works and creationism doesn't you could do worse than read and understand this paper.
Creationists often claim to be baffled by the way science derives information from historical records without actually being there to witness it. Curiously, they only seem to be baffled by this when it comes to things they don't want to be true. Ken Ham even proudly teaches children to kill any discussion about the distant past by asking 'Where you there?' knowing the the speaker or teacher wasn't and believing this invalidates everything they've said. It's a neat trick to prevent children learning something you don't want them to know and something that will stand any creationist in good stead well into adulthood.
The same creationists also claim to be baffled by the lack of absolute certainty in science and the way it keeps revising and improving on what it knows and how it adopts tentative answers pending further information and is prepared to ditch or adopt that temporary view later on. To these creationists, of course, certainty is far more important than accuracy and fitting the facts into a predetermined and unchangeable narrative is paramount. The actual truth is merely incidental to this objective.