Abstract A simple geometric mechanism: ‘the locus of intersections perpendicular bisectors and normal lines’, often arises in many guises nonlinear sciences. In this paper, a new application mechanism is given. Namely, we show that gives answers to all four basic problems on envelopes created by hyperplane families (existence problem, representation equivalence problem definitions, uniqueness p...

Co-creating science with members of the researched population improves being conducted. Here, we argue that developmental would particularly benefit from incorporating co-creation into scientific process given unique strength including perspectives young people lived experiences in research. We propose scientists approach co-created research similarly to other open practices and provide conside...