The Chilean government has put together an incredible slate of incentives for technology-based companies that export their products. The government wants you to invest $500,000 over 5 years, but is pretty flexible about how you do this.
The art of guessing results and solving problems without doing a proof or an exact calculation. Techniques include extreme-cases reasoning, dimensional analysis, successive approximation, discretization, generalization, and pictorial analysis. Application to mental calculation, solid geometry, musical intervals, logarithms, integration, infinite series, solitaire, and differential equations.