Concrete hates tension, loves compression.
In plain English this means if you squeeze it, it is mighty, and if you stretch it, it breaks. Concrete that comes to a sharp edge invites wear and tear. Edges 90 degrees or under ask for trouble. Any glancing blow stands a chance to chip it.
Plus, it hurts if your body scrapes against a right-angled edge.
HENGE is all about the chance encounters that fill our public. So we avoided right angles when we designed our table. Let the encounters begin.