In section 3.2.4, inserting a 5 into the resource matrix does not appear to have changed with the objective value or the production plan from section 3.2.2.2 and 3.2.3. The text suggest in 3.2.4 that: "We can see that the objective function has changed" and "The production plan has significantly changed." If you insert say a 10 into the resource matrix at [4,1], then both the objective value and production plan change significantly.
In section 3.2.4, inserting a 5 into the resource matrix does not appear to have changed with the objective value or the production plan from section 3.2.2.2 and 3.2.3. The text suggest in 3.2.4 that: "We can see that the objective function has changed" and "The production plan has significantly changed." If you insert say a 10 into the resource matrix at [4,1], then both the objective value and production plan change significantly.