What ideation tool?

Designers use a range of ideation tools, broadly grouped into four: Words, Sketches, Models and Computing. But while the choice, and use of ideation tools by an individual designer is largely subjective, there are many influential factors. Some influences are direct, for example, design teachers, who, particularly in designers formative years may act as role models, while other influences are based on professional skills, knowledge or beliefs. Moreover, some designers are acutely aware of what ideation tools influence their work and may openly discuss the influence, and either at the generative or communicative phase of the ideation process, while others might be reluctant to acknowledge what influences are at play. However, open or hidden, the influence of ideation tools on designers' ideation processes may be worth further investigation, particularly in the digital age with complimentary ideation tools such as virtual reality, VR, or augmented reality, AR. How does choice of tool manifest itself? How can it's impact be demonstrated. When is it significant?