State exercise requires knowledge of Events?

[m4v15]

Hi Rithm,

Love your work. I am looking to use some of your materials to teach some people react and I noticed something - for the state exercises here the solution requires knowledge of events is required to solve - however, at this stage in the order, people wouldn't have come across this stuff, as events is in pt 3.

Just wondered, was this intentional, to encourage some self learning, or am I missing something?

Thanks in advance