Engineering guides
Work through hiring and technical decisions. See how evidence and requirements change what you can recommend.
Choose a guide below. Each uses concrete situations to explain the reasoning, with conditions you can compare.
What Did the Interview Actually Tell You?
Use this when you’re discussing an interview and need to distinguish observed behavior from expectations about future work.
You’ll be able to describe what an answer supports, what remains untested, and a useful follow-up check.
What Does This Result Let Us Decide?
Use this when a technical result looks promising, but the next action is unclear.
You’ll be able to state what the result supports, the conditions on your recommendation, and what still needs checking.
This Works Here. What Changes Elsewhere?
Use this when a component works well in a test and you need to assess its consequences for the rest of the system.
You’ll be able to identify the dependencies and assumptions that determine whether a local improvement supports a wider change.
Looking for a question to apply to your own decision?
The decision tools offer reusable questions about evidence, uncertainty, timing, and trade-offs. These guides show how that reasoning works in specific engineering situations.