FASCINATION ABOUT WHAT IS MD5 TECHNOLOGY

The primary bit inside the byte (also the primary little bit in the 1st nibble) is flipped to make 00000111, which can be 0x07, as demonstrated from the lessen sample.How can it be sure that it’s unfeasible for some other input to have the same output (MD5 not does this mainly because it’s insecure, but the fundamental system remains suitable)?