What is the advantage and disadvantage of lock stitch?

The primary advantage of lock stitch is its strength and durability, making it suitable for a wide range of fabrics and applications, particularly in garment construction. Additionally, it produces a neat and flat finish on the fabric's surface. However, a disadvantage is that it can be less flexible than other stitch types, such as zigzag stitches, making it less ideal for stretchy or knit fabrics. Additionally, lock stitches can unravel if one of the threads breaks, compromising the integrity of the seam.