Children of Time is Adrian Tchaikovsky's ambitious dual narrative that follows humanity's desperate search for a new home alongside the accelerated evolution of spiders on a terraformed world.

The book alternates between the declining human ark ship Gilgamesh, where classicist Holsten Mason and biologist Avrana Kern struggle with their species' survival, and the spider world where we witness Portia and her descendants develop complex civilization over generations.

Tchaikovsky excels at making readers genuinely invested in both storylines, creating spider characters with distinct personalities and believable social structures that feel alien yet relatable. The evolutionary biology is meticulously researched and fascinating, showing how intelligence might develop differently from human cognition.

The pacing builds steadily across millennia, with each spider generation advancing their society in logical, compelling ways.

However, the human sections often feel weaker by comparison. The ark ship characters can be one-dimensional, particularly the antagonistic security chief Lain, and their political conflicts sometimes feel repetitive. Holsten's bumbling academic persona grows tiresome, and the human storyline relies heavily on familiar dystopian tropes. The book's greatest strength is its genuine sense of wonder and its thoughtful exploration of what intelligence and civilization might look like in non-human forms. Tchaikovsky doesn't anthropomorphize his spiders but creates a believable alternative path to consciousness. The climax brings both storylines together in a satisfying resolution that avoids easy answers. This book will appeal to hard science fiction fans who enjoy detailed world-building and aren't put off by extensive spider perspectives. Readers seeking character-driven narratives or fast-paced action should look elsewhere. Those with arachnophobia might struggle initially, though many find themselves surprisingly invested in the spider characters. It's essential reading for anyone interested in evolution, consciousness, or first contact scenarios, despite its occasionally sluggish human plotline.