[Frumious Bandersnatch]

Even the experiments that replicated natural conditions?

Two things on this.  Firstly, the experiments for obtaining pre-biotic soup have recently come under fire because the conditions used to obtain such soup made assumptions about early-earth atmospheric conditions that current researchers feel are faulty.

Secondly, were these experiments done naturally, or by an intelligent agent?

[Junior]

Firstly, the experiments done most recently mimic the conditions in the interstellar medium and they've produced amino acids and fatty globules which structurally resemble cell walls.

Secondly, simply because an experiment is done in the laboratory, the result is not necessarily artificial (intelligently designed). Would water created by passing an electrical current through a mixture of hydrogen and oxygen gas be artificial simply because it was done in the laboratory? Experiments have long been done that mimic the natural environment in an effort to allow researchers to view natural processes on the researchers time, as opposed to nature's time.