Common errors to avoid are speaking too softly
not looking at the audience
smiling
wandering from the subject
knowing all the facts
being disorganized
using conjectures or opinions
not supported by facts or specifics
trite expressions

These are all of the correct ones:

*speaking too softly

*not looking at the audience

*wandering from the subject

*being disorganized

*using conjectures or opinions not supported by facts or specifics

*trite expressions

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an great real life example for the lottery principle is the real life lottery itself. it adheres to the lottery principle so much it's even called lottery. you apply for the lottery in the manner of getting a ticket and if you are lucky, the goods are distributed to you, in this case, the huge amounts of money. there are other real life example but this is the best one.