An inference or conclusion, possibly based on evidence. example- "She is a successful Americanówhich is to say, an American." Joyce Carol Oates
External factors (i.e. events, conditions or decisions) that could affect the progress or success of a project or programme. They are necessary to achieve the project objectives, but are largely or completely beyond the control of the project management. They are worded as positive conditions. Initial assumptions are those conditions perceived to be essential for the success of a project or programme. Critical (or "killer") assumptions are those conditions perceived to threaten the implementation of a project or programme.
Conditions or resources that your group believes are needed for the success of your program, and that you believe already exist and will not be problematic. An assumption like a precondition is a condition that is necessary for your program's success. Unlike a precondition, it already is in place and does not need to be brought about. When your group states your assumptions, it is a good time to take into account the various conditions that your program's success will rely on. Assumptions are crucial because if they are incorrect it can completely alter how your program works.