Tag: sigmoid curve

The S-curve (1) – why your church might be like Ayers Rock

The ‘S’ curve. So many things seem to follow this shape that it’s easy to think it’s entirely and irresistibly natural. Mathematicians call it a Sigmoid curve – a horizontal line lifts up, and then gently falls. In the next few blog posts I want to think about some aspects of it for gospel ministry, so

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