Go to an art museum and you will see dozens of illustrations of the common sense truth that design requires a designer. Regardless if you see a classic Rembrandt or some weird post-modern existential scream, there was an artist behind it (i.e. a designer).
It’s the same in nature generally and specifically in that part of nature studied as the field of biology. In the following video, Cold-Case Christianity’s J. Warner Wallace, the NBC “Dateline” detective extraordinaire, walks us through eight signs he sees in biology of design.