Folded rocks question

[Bill_II]

I just checked the AIG site and Dr. Snelling has an article on this. Surprisingly what he didn’t address is what caused the soft layers to fold in the first place. How was force applied to bend these soft layers and not destroy them?

And he also says this

The previous article in this series documented the lack of evidence for slow and gradual erosion at the boundaries between the sediment layers.

And yet there are photographs showing layers that were eroded by a river and then filled in by later deposits.

Wikipedia has a nice article on folding.

Fold (geology)

Which after reading makes you question why Dr. Snelling would say

The conventional explanation is that under the pressure and heat of burial, the hardened sandstone and limestone layers were bent so slowly they behaved as though they were plastic and thus did not break.

given heat and pressure is not always required. He acts as if there is only one explanation when in reality there are many.