Sunday 21 January 2024

The Outlier Sungai Batu Is

7 November 2023'

The Malaysian National Heritage Department (JWN) organised a full-day seminar on Ancient Kedah: Research and Dating Polemics in Sungai Petani on 4 November 2023. Among the speakers was Dr Shaiful Idzwan Shahidan, a consultant at USAINS Unitech.

Dr Shaiful Idzwan is an advocate of the Bayesian method in archaeology – an explicit, probabilistic method for combining different sorts of evidence to estimate the dates of events that happened in the past and for quantifying the uncertainties of these estimates.

In answering the polemics of research and archaeological dating especially related to the Sungai Batu Archaeological Complex (SBAC), he said that the radiocarbon dating of the SB2H site where the 788 BCE sample was found (sample 516413), should not be compared directly based on the depth of the spit because the level of the spit is different according to the actual contour of the site before being excavated.

Dr Shaiful Idzwan said that the dating obtained from the yellow plots is reliable because it is representative of the whole site from the beginning until the final layer of culture.

A chronological model of the SB2H site showing the calibrated dating of samples from the site is further evidence that the 788 BCE sample is an outlier.

An outlier is an observation that lies an abnormal distance from other values in a random sample from a population.

In fact, sample 516413 does not specifically point to 788 BCE as claimed, but has a range between 788 BCE to 537 BCE). However, he said that any finding needs to be adapted to the historical and cultural context.

In this case, the rest of the SBAC samples have overwhelmingly been dated to the 2nd to the 8th century CE. This range fits into not just the Bujang Valley narrative, but coincides also with the existence of other maritime polities such as Srivijaya, China and India, as well as nations that had once traded with Ancient Kedah.

A chronological model of the SB2H site at SBAC showing sample 516413 as an outlier

This narrative has been peer-reviewed and accepted by experts on Southeast Asian archaeology.

We are aware that historical narratives can change with new findings. HG Quaritch Wales, the man who discovered the Bukit Batu Pahat temple in 1936 dated the temple to the 7th to 8th century CE based on the data that was available to him during that era.

However, more recent scholars have revised that to the 12th to 13th century CE.

The onus is on the JWN to come up with a narrative that has been proven, peer-reviewed and agreed upon by experts in Southeast Asian archaeology. Else, the nation’s historical narrative will be laughed upon by other nations.

Copy and paste: 21 January 2024 > 9 Rejab 1445H: 1.56 am

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