Final answer:
It is true that sometimes hidden lines can be omitted in complex technical drawings if the representation remains clear without them, relying on implied lines and contour lines to suggest form and maintain clarity.
Step-by-step explanation:
True, sometimes hidden lines are omitted on complex views when the drawing is clear without them. In engineering drawing and drafting, hidden lines represent edges and boundaries that are not directly visible from that particular viewpoint. However, in instances where the drawing maintains its clarity and the understanding of the form is not compromised, these lines may be left out to avoid clutter and enhance readability. This is similar to the concept of implied lines, which are not explicitly drawn, but the viewer can infer their presence through the context of the surrounding features.
Whether it's the shading techniques demonstrated by hatching in drawings or the use of contour lines to create the illusion of form and motion, the omission of certain elements can still convey the necessary information effectively. Such decisions are typically based on conventions, the artist's or engineer's discretion, and the need to convey information in a way that is easily understood by the intended audience.