I have some questions. I need answers, Please.
1- If an extra face exists inside of an object why it is considered as a problem? Nobody is going to see them, right? Why we have to remove it?
2- Extrude a face vs. select a face and then ‘G’ and then drag that along with any axis – what is the difference between these two procedures?
3- Scaling an entire object in Edit mode and scaling an object in object mode is there any difference between these two?
4- So if number one is right procedure (to eliminate extra faces) then why sometimes when we insert one object into another and keep modeling, without erasing the overlapping part- that is considered okay. Nobody seems to bother in this case (attached image).