Sure, but there are animals with much larger brains on Earth which have - we believe - a reasonably high level of cognition but have not achieved the technological and engineering feats which we have (i.e. dolphins, whales, elephants as naive examples based on brain mass and complexity).
Conversely you have birds - with much smaller brains - which also don't achieve those things but display advanced language skills, have apparent societal structure and despite our inability to understand it seem to have enough language to communicate advanced concepts.
