I'm pretty sure Norman Wildberger professor at University of New South Wales is an ultra-finitist. If you're disturbed by infinity he's your goto!,(reply>), +̲ ̲ 1̲  5̲ ̲ 8̲ ̲ 5̲ ̲  4̲   ̲0̲ ̲  8̲ ̲  3̲ ̲  3̲ ̲  1̲  7̲,(reply>), Send  me  a direct message right away on WhatsApp.