The original human brain seems to have been little different from the brains of our animal ancestors. Then, a cosmic catastrophe may have triggered, through mutation, the addition of that extra layer our brains now possess. Alternatively, those extra-terrestrials who allegedly created ‘the Adam’ (refer Christianity’s Bible) may have lifted us to the top of the totem pole of life forms.
Our impressive capacity for conceptualisation, manual manipulation, and cultural expression is evident, in spite of the reality that human greed and the associated accumulation of material far exceeding normal need display our collective ‘clay feet’. The human mind obviously requires some quality ’re-boring’ (so to speak).