Will we ever be sure?

On the Eastern extremity of England, now known as the county of Norfolk and situated in Lat. 52- 36 - 13 and long. 1- 44- 34. A small number of Neolithic hunters sat around a fire cooking a meal, gathered as they had crossed the windswept sands, which at that time, as a series of salt marshes, linked England to Europe. (It may yet be proved that at one time The Dogger Bank was a separate island inhabited by wandering hunters.)
Casting their eyes shoreward they noticed several figures making their way towards them. Uncertain as to the reception they would receive, they hurriedly gathered their belongings and fled in the direction whence they came. The pursuers perceiving their flight, returned to their winter habitat on the low cliffs overlooking the sea. (This can only be a hypothetical account, but can anyone be sure of the reason why they left their fire blackened pots, which were valued, and necessary for cooking their food.) The windblown sands very quickly covered the remains of the fire, plus the four abandoned crude fire blackened earthenware handmade pots, and all traces of their presence disappeared.
The relentless passage of time continued, depositing layer upon layer of shifting sand, until eventually, the evidence of the hasty meal of those hunter gatherers became buried below the surface to a depth of 30 feet. There will never be enough money made available to archeologists, to afford such a stupendous dig, necessary to uncover what some may consider something of such little significance. The largest and smallest archeological finds, are made on construction sites .This was the case in 1955 A.D. during the construction of the now replaced, Great Yarmouth Power Station. Working on the intake tunnels, which eventually linked from the river to the power plant, and around 250 yards from the river Yare, a Dutch labourer unearthed the remains of the fire and broken pot shards, which were smashed with his shovel. The foreman, aware that the work on site would be stopped if reported, told the labourer to clear away all evidence of this important find.
I was in that gang, and managed to gather a few shards of these crudely made pots .Over the next few years I kept them in our garden shed, unaware of the historic importance of such a find. Sadly now lost forever. Many writers over the years, were in general agreement that in the year 495 A.D. Cerdic, the Saxon, and tenth in descent from Woden, landed upon the bank on which the town now stands. This account cannot be sufficiently substantiated. Prior to 1840, a Mr. Robberds wrote an elaborate tract on the “Eastern Valleys of Norfolk” saying, he was convinced that this part of the coast was not then in existence. Perhaps he would have eaten his words, had he been with me on that summer morning in 1955.