Shown in Figure , The trend in the relationship between the angle of the interface and the likelihood of deflection is in fact linear, with some small outliers causing deviations from a perfectly linear relationship, this suggests that the angle of the interface has a consistent and properties at the interface in determining its susceptibility to deflection. The toughness of the interface, as mentioned in the statement, is an important factor in this regard. It is possible that the material properties at the interface do not change significantly as the angle of the interface increases, leading to the observed linear behavior. In Fig. , we a start visual difference here, comparing 45 • and 2.5 • , as we see that the 45 • is able to go through clear deflection at the 0.04 MPa mark; however, with the 2.5 • . we observe penetration occurring early on, as the defects/interface angle are not influential enough to allow the crack to grow perpendicularly from the line of symmetry.