There is a very short answer- yes. All concrete cracks, it is an intrinsic characteristic of the material. We design our concrete installations using scoring and other preventative measures so that the natural cracking follows the bottom of the cut scoring joints (which is why we score concrete). You can think of this the same way that a folded or perforated piece of paper tears in a predicable way along the fold’s path.
In about 1 out of 10 jobs we get some stress cracking through the middle of the slab. These are typically hairline cracks, which don’t effect the structural integrity of the slab, but don’t look great either. I like to give this due diligence warning because sometimes clients are surprised or upset with this cracking, which is not a defect. We do all we can to reduce these issues using good baserock prep, steel reinforcement, professional finishers, and good quality concrete material.
Here is a good short video for more on concrete cracking: httpv://youtu.be/oAHPoVW3tNU