the effects - somethign caused by something else
the effects of alcohol
an idea of - a concept - a thought - knowledge
Give me an idea of how buig this sign will be'
Oh, really BIG!
accurate - not inaccurate - precise, clear, detailed, close to correct, often quantitative
His shoooting was accurate, always on target.
His delivery of the piece of music was accurate, but unfeeling
an accurate idea of the effects
A close to correct - concept, thought, knowledge - of the effects of .... something
A: Give me an accurate idea of the effect of this payment on your life.
B: I will be able to send my children to school but not live lavishly.
A: Give me an accurate idea of the effect of this answer on your life.
B: It is inconsequential. I shall note it and move on, either way.