It's not necessarily true that electrical appliances *don't* have pointed surfaces. Many do, depending on their function. Here's why some appliances might have rounded or smooth surfaces:

* Safety: Sharp edges or points can pose a risk of injury, especially in a household environment where children or pets might be around.

* Ergonomics: Rounded surfaces are often more comfortable to hold and use, especially for prolonged periods.

* Durability: Sharp edges can be more susceptible to damage, especially during handling or cleaning.

* Aesthetics: Rounded surfaces can be perceived as more pleasing and modern in design.

However, pointed surfaces *can* be beneficial in some cases:

* Functionality: Some appliances, like certain tools or heating elements, require pointed surfaces for their intended use.

* Heat dissipation: Pointed surfaces can help to dissipate heat more effectively in certain applications.

Ultimately, the design of an electrical appliance depends on its function, safety requirements, and aesthetic considerations. There's no hard-and-fast rule about pointed surfaces being universally bad or good.