True or False: No one should walk on roofs made out of slate.

The statement that no one should walk on roofs made out of slate is a reflection of the inherent fragility and potential hazards associated with slate roofing. Slate roofs are typically comprised of thin, naturally occurring stone tiles that can be quite brittle. When weight is applied, especially from someone who is not experienced in navigating such surfaces, there is a significant risk of breaking the tiles, which could lead to costly repairs and structural damage.

In addition, walking on a slate roof can also create safety hazards for the person walking on it. The surface can be slippery, particularly in wet conditions, increasing the risk of slips and falls. This makes it advisable to avoid walking on slate roofs unless absolutely necessary.

While there are situations where it may be essential for maintenance work to be performed by professionals, the overarching principle is that, due to the characteristics of slate roofs, it is generally best to avoid foot traffic altogether. Hence, the statement is accurately conveyed as true.