Major interests are [url=https://mastodonapp.uk/tags/polyhedra]#polyhedra[/url], [url=https://mastodonapp.uk/tags/aeroplanes]#aeroplanes[/url] and J.W. Dunne. Others include [url=https://mastodonapp.uk/tags/architecture]#architecture[/url]. [url=https://mastodonapp.uk/tags/philosophy]#philosophy[/url], fundamental physics and soft systems engineering.