A toy once promised a place beyond me, Yet none have returned with proof. A scientist built a curve against me, To hide from a terrible truth. Halve me, third me, tear me apart, I surrender no measure or sea. Every boundary ever conceived Is still surrounded by me. What am I?

I am born from a boundary no one drew, I vanish when both sides agree, I can divide a room without moving, and I grow sharper the less I am seen.

In my world, bulls and bears determine success or ruin. My only advice is to diversify, as percentages keep accruing.

I have problems. Lots of problems. Fortunately, solving them is expected.

Once defined by a logical man as repetition with expected change, The common man may describe me as behaviour that is strange, Criminals may use to me to plea unsoundness of mind, But the clinical community have left this term long behind