What was Darwin’s perspective on the idea of irreducible complexity, gaps in the fossil record and beautiful animals like the peacock?

http://www.asa3.org/evolution/irred_compl.html

Darwin did not have all the answers as scientists today do not either. He was puzzled by complex organs like the eye. He was unaware of genetics completely. Even so from his perspecive, he felt there was a natural explaination. As it turns out it seems he was quite right.

http://www.uwgb.edu/dutchs/PSEUDOSC/IntelDesign.HTM

Darwin's perspective on the idea of irreducible complexity was that complex organs, like the eye, could have evolved gradually through natural selection. He believed that even though these organs appeared complex, they could have originated from simpler organs that provided some advantage to the organism. Over time, through small, incremental changes, these organs could have become more complex and functional.

Regarding the gaps in the fossil record, Darwin recognized that there were incomplete fossil records of the past and acknowledged that there were many species that had lived and become extinct without leaving a trace in the fossil record. However, he argued that the incompleteness of the fossil record did not invalidate the theory of evolution. He believed that future discoveries would fill in some of these gaps, and that the existing evidence was still sufficient to support his theory.

As for beautiful animals like the peacock, Darwin saw their beauty as a result of sexual selection, which is a specific type of natural selection. He proposed that certain traits, such as bright colors and elaborate plumage, evolved because they were preferred by the opposite sex during mating. He suggested that these traits signaled good health, genetic fitness, or the ability to survive and reproduce, and therefore, individuals with these attractive traits were more successful in attracting mates and passing on their genes.

The provided links can provide additional information on Darwin's perspective on irreducible complexity and intelligent design, which is a counter-argument to evolutionary theory.