How could it be aBFT?

[Radix](https://www.google.com/search?q=is+radix+asynchronous+byzantine+%3F&client=safari&ei=sZjiYaufI77LkPIPivWP0A4&oq=is+radix+asynchronous+byzantine+%3F&gs_lcp=ChNtb2JpbGUtZ3dzLXdpei1zZXJwEAMyBQghEKABMgUIIRCgATIFCCEQoAEyBQghEKABMgUIIRCrAjIFCCEQqwI6BwgAEEcQsAM6CAghEBYQHRAeSgQIQRgAULUKWNMgYL8iaAJwAXgAgAF8iAGlCJIBBDEwLjKYAQCgAQHIAQTAAQE&sclient=mobile-gws-wiz-serp) Radix claims not to be a blockchain and allows unlimited sharding. I wonder how is that possible. Please could someone explain? Thank you. [Radix website](https://www.radixdlt.com/) [Radix white paper](https://uploads-ssl.webflow.com/6053f7fca5bf627283b582c2/61d5a4583aad156a094c5628_Radix%20DeFi%20White%20Paper%20v2.05.pdf) Édit: I’m trying to understand how is that possible. I believe in Hashgraph more than anything else and thought no other technology could mimic it. I might be wrong in my assumption this why I’m asking people in this sub who know more than me. I’m only 20 and still learning. Thank you.