NECESSARY-if all conditions are met, but not same, could be there is a mistake
But, it means that there could be a mistake. This is dangerous because “Today, we’re mutually dependent other groups' research, because we cite each other and build upon each other’s work. In this way, a single mistake can multiply and create a cascade of bad research, that is very hard to detect and takes long time to correct,” Associate Professor David Budtz Pedersen from the Department of Communication, Aalborg University, Denmark. says.