It's very

readable.

it but it is written from that actually you know what what is it along this journey of me writing this book that i've learned as well and i've enjoyed researching and putting it together and the the the baseline that you create in that changes a number of times and the By 1941, they are looking at the Mark II gun.

The Mark II is not mentioned in this.

The Mark II is developed in 1941-ish.

And I think this is about the capability and how that changes over 1938 to 1941.

It changes within the book.

What made you decide to kind of structure the book that way and go down that route? So