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Large crazing of glass is a phenomenon that typically indicates that the glass was exposed to intense heat, which causes it to begin cracking and forming a network of fine lines. This crazing generally occurs when the glass experiences a significant temperature differential, often due to an intense fire that heats one side of the glass while the other side remains cooler.

When large crazing is present, it suggests that the glass was not located close to the point of origin of the fire, as the extreme heat required for crazing would likely damage the glass beyond repair if it were near the fire. Instead, significant crazing indicates that while the glass was affected by the heat of the fire, it was positioned at a distance from the direct source of the flames. Such an observable condition helps investigators determine the fire's spread and the areas most severely impacted, providing insights into how the fire developed and moved within the structure.

In contrast to this, quickly extinguished fires are more likely to produce glass that is minimally damaged. Proximity to the point of origin would typically result in more severe damage or even complete destruction of the glass. Water damage is usually associated with different indicators, such as rust or water marks, rather than crazing of glass. Thus, the reasoning aligns with