Instruct: Classify a given Amazon review as either positive or negative.
Query: a 4 year old soon to be an engineer

My little brother just turned four. For the last year he has been creating gravity defying structures using his wooden blocks. His new Tinkertoys set allows him to expand on his creations as his imagination blossoms. The reason I offered a rating of 4 for durability is: the dog chewed up one of the rods! Nonetheless I am planning on getting another box to supplement our (I mean his) Tinkertoy set.