• 7 x 7 is bigger than 6 x 8 ...by 1^2
• algebraic identities/vedic math
• calculus - integrals measuring time..
• difference between a square is 2x-1 where x is next number squared
• dimensions
• equinox and solstice
• infinity
• Jesus's birth, death & resurrection
• mutation
• overcoming inertia
• proof by induction
• Pythagorean theorem
• recursion
• sky doesn't end/air gets thinner further up (thanks Modest Mouse)
• space-time continuum
• two overlapping infinities = finite space

Coolest Financial Concepts

• accounting equation/double entry bookkeeping
• candlestick graphs
• cash vs accrual basis
• concept of 'yield' esp in bonds
• derivatives
• euler’s number & compound interest
• excel - what is wrong with me? why am I including this
• fundamental & technical analysis
• indexes
• leases (the concept of)
• leverage
• options
• short-selling
• treasury stock