The #bitcoin mempool is where all transactions are broadcast and stored until confirmed in a block. It acts as a waiting room where transactions are validated by nodes before conformation in a block.
If the mempool is empty, it means there are not many transactions happening on the baselayer.
#bitcoin is the culmination of many inventions over time. Contrary to popular belief, it did not appear on the scene out of no where, but it was just in time. ๐งก