Per·spi·cac·i·ous

Having keen insight and sharp understanding; able to notice and comprehend subtle details with clarity.

Relating to mental acuity or discernment, often suggesting wisdom in perception.

"Her perspicacious analysis of the debate revealed flaws that had gone unnoticed by even the most seasoned critics."

From Latin perspicax (“sharp-sighted, discerning”), from perspicere (“to look through, to see clearly”).