Let's say someone copied our world today and created a new world just like it. Then the people in the new world would think they had been around for a while because everything is the same as in our world. But in fact that world was just created. They people couldn't tell.
You are assuming there is a Creator.
Religious-wise, people assume there is a Creator, and therefore explains their daily observation with reference to the Creator. Scientifically, the way to seek God is to infer if there is a pattern in our daily observations and natural phenomena, then conclude if there is a Creator.
ID is essentially Creatism repackaged because it fundementally assumes there is a Creator, then using the Creator to explain the experiment, and then conclude there must be a Creator. It is the the age-old cyclic arguments used by Christians to justify their beliefs.
I used to be a Christian. I gave up on it because it cannot reconcile with Science.