Sociobiological explanations of development

At first glance it is just an average shopping list written on the back of some photocopied lecture notes from a class they didnt attend but the lecture was titled "Sociobiological explanations of development" so it is interesting after reading the notes on hunting and gathering and early humans that we could also see the reverse side's shopping list as perhaps an example used in a class 2000 years in the future, looking back on our current stage in the evolutionary cycle. Eating Henny Penny chicken burgers would perhaps suggest we're not really all that advanced after all.
the front reads:

EGGS
MILK
BREAD (?)
2 LEMONS
CIGGS

HENNY PENNY
CHICKEN BURGER + CHIPS

(and a love heart at the base of page)
the back reads:
Sociobiological explanations of development.
a) Thought
Early man
Morphological changes (physical appearance) -> Bipedalism -> changes to foot & pelvis
Move from forest to savanna.
Impact on thought
Devel. of muscular thumb -> tool devel.
Tool manufacture -> change in culture & communication (thought to be the pivot of human devel. of human thought.)
-> Increase in intellectual capacity occurs thru a complex social & behavioural adaptions eg. food sharing -> foresight
cooperative hunting -> importance of mother infant bonds.