This document provides an overview of Systematic Inventive Thinking (SIT), an innovation framework developed by Jacob Goldenberg, Drew Boyd, and Eberhard Schmidt. It introduces several SIT tools for overcoming cognitive biases that inhibit innovation, including Closed World, Subtraction, Task Unification, Multiplication, Division, and Attribute Dependency. Examples are given to illustrate how each tool can be applied to generate new ideas and product variations. Resources for learning more about SIT are provided at the end.