Please, explaining clearly. Thank you. 1. Are there any limits on what software we could potentially bug with our compiler? 2. Consider the answer to the previous question and assume you have such a bugged compiler on your system. If you only have standard tools compiled with your bugged compiler, is there any way to detect that the compiler is bugged? 3. How might you go about detecting a bugged compiler? (Note: it's normal for different compilers to produce different output from the same source code. It's also normal for compilers for different platforms, even if they're the same compiler, to produce different results.) 4. Can we be entirely sure that our software does what we think it does and nothing more? If not, what are some steps we can take to make ourselves more confident