To exercise the power of reason,
as by conceiving ideas, drawing inferences,
and using judgment.
Today simplicity rules. If you want to explore virtual world here’s a link, see where it takes you. http://www.thefreedictionary.com/_/dict.aspx?rd=1&word=think
But perhaps good judgement would be to focus today on real world, real exercise,real people. Think and then decide.
Have a good day