1.- Could you introduce yourself to Jamreads’ readers?
Hello! Thanks for having me Jamedi, I'm a science fiction author from the UK. My books are typically far-future and post human (the Amaranthine Spectrum trilogy, written as Tom Toner), or completely inhuman (the Beasts of Lake Oph and the Immeasurable Heaven). 

2.- Caspar Geon is a penname. Why did you decide to choose it for releasing the Immeasurable Heaven?
Becoming Caspar was the only way to write (and publish) what I really wanted to write, because publishers can take more risks with a clean slate, and I suppose I'll be  Caspar for all my really out there stuff going forward, unless I ever return to the Amaranthine Spectrum one day. The name Caspar is old Persian for ‘treasurer’ - treasurer of the Geon - and the Geon itself will feature perhaps in the next book. 

3.- How did the original idea for The Immeasurable Heaven appear? Did it change much during the writing phase?
It was actually two separate ideas that sort of squished together early on - the first was that I wanted to go further than I thought might be possible with a traditionally published novel and have lots of fun in an entirely inhuman world, and second was this notion of someone who could pierce the skin of realities with a uniquely shaped tool, like a can opener. It changed a hell of a lot during the five year writing process, but those two core ideas are still there. 

4.- Part of the pitch of your novel promises non-human characters; how did you end up settling on that?
I'd got a bit bored of humans, and thought it would be nice to see something else, to explore places we’ve never been and never could go - settings and characters and cultures untouched by our influence in any way, that have formed entirely on their own long before humans ever existed. 

5.- The Immeasurable Heaven features a really, really ambitious universe/world, with multiple layers; how did you manage to keep a consistency while writing it?
A massive pile of notebooks, with sheaves of colour-coded post-it notes to mark the pages. I don't use Scrivener or anything like that, just my basic system, crossing out as I go so I know what has gone into the book proper and what hasn't. The problem is that if you leave the work for more than a month or two you have to go back through all of the notebooks and refresh your memory, which is what I'm preparing to do after a hiatus on the new book. I also have to rummage around the house looking for them all, because they usually end up scattered around in different places. 

6.- You created many unique concepts for this book. Which one would you say ended up being your favourite?
I have a particular soft spot for the Craver of the wooden mountain, a blind creature that wanders around in total darkness munching sentient fungus and regurgitating it for its pup, which lives in a pouch. Long ago an enterprising person (somehow) discovered how delicious the regurgitated fungus was, tossed the pup out of its pouch and weighted it so that the Craver still believed it was with child and would continue to regurgitate indefinitely. Eventually a supper club started up in the pouch, attracting wealthy beings from across the galaxy to dine on the Craver’s mash as it continued its wanderings of the tunnels, oblivious. Only one scene in the book takes place in the supper club, but it was a lot of fun to write.    

7.-  How did you feel finally this book was out in the world?
I still can't believe it, really - for years I thought it was a lost cause. The book’s getting some nice reviews (and a fair few flummoxed DNFs on Goodreads). 

8.- Which other pieces of media would you recommend to people that enjoyed The Immeasurable Heaven?

Any books by Jack Vance, Iain M Banks or C J Cherryh. TV-wise, perhaps Scavenger's Reign. 

9.- What can we expect from Caspar Geon in the future?
I have a finished SF novel unrelated to the Immeasurable Heaven that actually does have a couple of humans in it (boo!), and there will hopefully be news on that soon. I also have another standalone book in the Immeasurable Heaven universe half finished (the one I have to reread all my notes for), and I'm really enjoying writing this one. It's probably the most worldbuilding I've ever had to do, and the book’s taking a long time to come together, but it's a huge pleasure to explore Yokkun's Depth again from new perspectives.